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slide-1
SLIDE 1

▼✐s❛❧❧♦❝❛t✐♦♥ ❈♦sts ♦❢ ❉✐❣❣✐♥❣ ❉❡❡♣❡r ✐♥t♦ t❤❡ ❈❡♥tr❛❧ ❇❛♥❦ ❚♦♦❧❦✐t

❘♦❜❡rt ❑✉rt③♠❛♥1 ❛♥❞ ❉❛✈✐❞ ❩❡❦❡2

1❋❡❞❡r❛❧ ❘❡s❡r✈❡ ❇♦❛r❞ ♦❢ ●♦✈❡r♥♦rs 2❯♥✐✈❡rs✐t② ♦❢ ❙♦✉t❤❡r♥ ❈❛❧✐❢♦r♥✐❛

◆♦✈❡♠❜❡r✱ ✷✵✶✼

❉■❙❈▲❆■▼❊❘✿ ❚❤❡ ✈✐❡✇s ❡①♣r❡ss❡❞ ❛r❡ s♦❧❡❧② t❤❡ r❡s♣♦♥s✐❜✐❧✐t② ♦❢ t❤❡ ❛✉t❤♦rs ❛♥❞ s❤♦✉❧❞ ♥♦t ❜❡ ✐♥t❡r♣r❡t❡❞ ❛s r❡✢❡❝t✐♥❣ t❤❡ ✈✐❡✇s ♦❢ t❤❡ ❇♦❛r❞ ♦❢ ●♦✈❡r♥♦rs ♦❢ t❤❡ ❋❡❞❡r❛❧ ❘❡s❡r✈❡ ❙②st❡♠ ♦r ♦❢ ❛♥②♦♥❡ ❡❧s❡ ❛ss♦❝✐❛t❡❞ ✇✐t❤ t❤❡ ❋❡❞❡r❛❧ ❘❡s❡r✈❡ ❙②st❡♠✳

slide-2
SLIDE 2

▼♦t✐✈❛t✐♦♥

▲❛r❣❡✲s❝❛❧❡ ❛ss❡t ♣✉r❝❤❛s❡s ✭▲❙❆Ps✮ ❜② ❋❡❞✱ ❊❈❇✱ ❡t❝✳

◮ ●♦✈❡r♥♠❡♥t ❞❡❜t ✭▲❙●❇❇✮✱ ✐♥✈❡st♠❡♥t✲❣r❛❞❡ ❝♦r♣♦r❛t❡

❞❡❜t ✭▲❙❈❇❇✮✱ ❊❚❋s✱ ▼❇❙✱ ♦t❤❡r s❡❝✉r✐t✐❡s

◮ ❆✈❡r❛❣❡ ❡✛❡❝ts✿ ▲❛r❣❡ ❡✛❡❝t ♦♥ s♣r❡❛❞s✱ ✐ss✉❛♥❝❡s ◮ ❘❡❧❛t✐✈❡ ❡✛❡❝ts✿ ❇✐❣❣❡r ❡✛❡❝ts ♦♥ ❡❧✐❣✐❜❧❡ ❛ss❡ts

❊①❛♠♣❧❡✿ ❊❈❇ ❈♦r♣♦r❛t❡ ❙❡❝✉r✐t② P✉r❝❤❛s❡ Pr♦❣r❛♠

◮ P✉r❝❤❛s❡ ♦❢ ❊❯✲❛r❡❛ ✐♥✈❡st♠❡♥t ❣r❛❞❡ ❝♦r♣✳ ❜♦♥❞s ◮ ❙♣r❡❛❞s ♦❢ ♣✉r❝❤❛s❡❞ ❜♦♥❞s ❢❡❧❧ r❡❧❛t✐✈❡❧② ♠♦r❡

❍❡t❡r♦❣❡♥❡♦✉s ❡✛❡❝ts ♦♥ s♣r❡❛❞s

◮ ❍❡t❡r♦❣❡♥❡♦✉s ❡✛❡❝t ♦♥ ❝♦st ♦❢ ❝❛♣✐t❛❧✱ ✐♥✈❡st♠❡♥t ◮ ■♠♣❧✐❝❛t✐♦♥s ❢♦r ❝❛♣✐t❛❧ ✭♠✐s✮❛❧❧♦❝❛t✐♦♥✦ ✶ ✴ ✷✻

slide-3
SLIDE 3

❚❤✐s P❛♣❡r

▼✐s❛❧❧♦❝❛t✐♦♥ ✭♦r ✉♥❞♦✐♥❣✮ ❛ r❡s✉❧t ♦❢ ▲❙❈❇❇

◮ ■♠♣❧✐❡s ❛ ♥♦✈❡❧ ▲❙❆P ♣♦❧✐❝② tr❛❞❡✲♦✛ ◮ ✏❉✐str✐❜✉t✐♦♥❛❧ ❡✛❡❝ts✑ ♦❢ ▼P ♦♥ ✜r♠s ◮ ❈♦st ♦❢ ❞✐❣❣✐♥❣ ❞❡❡♣❡r ✐♥t♦ ❝❡♥tr❛❧ ❜❛♥❦ t♦♦❧❦✐t

▼♦❞❡❧ ♦❢ ▲❙❆Ps ✇✐t❤ ❤❡t❡r♦❣❡♥❡♦✉s ✜r♠s

◮ ❋✐r♠s ❤❡t❡r♦❣❡♥❡♦✉s ✐♥ ♣r♦❞✉❝t✐♦♥ ✫ ✜♥❛♥❝✐♥❣ ◮ ■♥❝♦♠♣❧❡t❡ ✫ s❡❣♠❡♥t❡❞ ♠❛r❦❡ts ◮ ❈♦♠♣❛r❡ ▲❙❈❇❇ ✇✐t❤ ▲❙●❇❇

❚✇♦ ❧❡✈❡❧s ♦❢ ❆♥❛❧②s✐s

◮ ❙t❛t✐❝ ♠♦❞❡❧ t♦ ❞❡♠♦♥str❛t❡ ♠❡❝❤❛♥✐s♠ ◮ ❋✉❧❧ ◆❑ ♠♦❞❡❧ ✷ ✴ ✷✻

slide-4
SLIDE 4

❘❡s✉❧ts

❙t❛t✐❝ ♠♦❞❡❧ t♦ ❞❡♠♦♥str❛t❡ ♠❡❝❤❛♥✐s♠

◮ ▲❙●❇❇ ❛✛❡❝ts s♣r❡❛❞s ❛♣♣r♦①✐♠❛t❡❧② ❡✈❡♥❧② ◮ ▲❙❈❇❇ ❛✛❡❝ts s♣r❡❛❞s ❤❡t❡r♦❣❡♥❡♦✉s❧② ◮ ❚❤✉s✱ ❞✐✛❡r❡♥t ✐♠♣❧✐❝❛t✐♦♥s ❢♦r t❤❡ ✭♠✐s✮❛❧❧♦❝❛t✐♦♥ ♦❢ ❝❛♣✐t❛❧

◗✉❛♥t✐t❛t✐✈❡ ▼♦❞❡❧✿ ◆❡✇ ❑❡②♥❡s✐❛♥ ❉❙●❊ ♠♦❞❡❧

◮ ❊♠❜❡❞ ✐♥ ◆❑ ♠♦❞❡❧✱ ❛❧❛ ●❡rt❧❡r ❛♥❞ ❑❛r❛❞✐ ✭✷✵✶✸✮ ◮ ❆❧❧ ▲❙❆Ps ❧♦✇❡r ❛✈❡r❛❣❡ s♣r❡❛❞s✱ r❛✐s❡ ✐♥✈❡st♠❡♥t ◮ ▲❙❈❇❇s ✐♥❞✉❝❡ ❤❡t❡r♦❣❡♥❡♦✉s ♠♦✈❡♠❡♥ts ✐♥ s♣r❡❛❞s ❛♥❞

✐♥❞✉❝❡ q✉❛♥t✐t❛t✐✈❡❧② s✐❣♥✐✜❝❛♥t ♠✐s❛❧❧♦❝❛t✐♦♥ ❡✛❡❝t

❩❡r♦ ▲♦✇❡r ❇♦✉♥❞

◮ ▼✐s❛❧❧♦❝❛t✐♦♥ ♥♦t ❛♠♣❧✐✜❡❞ ❜② ❩▲❇ ✭t♦ ✜rst✲♦r❞❡r✮ ◮ ▼✐s❛❧❧♦❝✳ ❡✛❡❝t ❃ ♦✉t♣✉t ❣❛✐♥ ❛✇❛② ❢r♦♠ ❩▲❇ ◮ ▼✐s❛❧❧♦❝✳ ❡✛❡❝t ❁ ♦✉t♣✉t ❣❛✐♥ ❛t ❩▲❇ ✸ ✴ ✷✻

slide-5
SLIDE 5

▲✐t❡r❛t✉r❡

❉❙●❊ ♠♦❞❡❧s ✇✐t❤ ✐♠♣❡r❢❡❝t ❛ss❡t✲s✉❜st✐t✉t❛❜✐❧✐t② ❛♥❞ ✉♥❝♦♥✈❡♥t✐♦♥❛❧ ♠♦♥❡t❛r② ♣♦❧✐❝②

◮ ●❡rt❧❡r ✫ ❑❛r❛❞✐ ✭✷✵✶✶✴✷✵✶✸✮❀ ❈✉r❞✐❛ ❛♥❞ ❲♦♦❞❢♦r❞ ✭✷✵✶✺✮❀

❍❡ ❛♥❞ ❑r✐s❤♥❛♠✉rt❤② ✭✷✵✶✸✮

▼✐s❛❧❧♦❝❛t✐♦♥✱ ✜♥❛♥❝✐❛❧ ❝♦♥str❛✐♥ts✴❜♦rr♦✇✐♥❣ ❝♦sts

◮ ▼✐❞r✐❣❛♥ ✫ ❳✉ ✭✷✵✶✹✮❀ ●✐❧❝❤r✐st✱ ❙✐♠✱ ❩❛❦r❛❥s❡❦ ✭✷✵✶✸✮❀

❉❛✈✐❞✱ ❙❝❤♠✐❞✱ ❩❡❦❡ ✭✷✵✶✼✮

❊♠♣✐r✐❝❛❧ ❡✈✐❞❡♥❝❡ ♦❢ ❤❡t❡r♦❣❡♥❡♦✉s ❡✛❡❝ts ♦❢ ▲❙❆Ps

◮ ❑r✐s❤♥❛♠✉rt❤② ❛♥❞ ❱✐ss✐♥❣✲❏♦r❣❡♥s❡♥ ✭✷✵✶✶✮❀ ❋♦❧❡②✲❋✐s❤❡r✱

❘❛♠❝❤❛r❛♥✱ ❨✉ ✭✷✵✶✻✮❀ ❉❛r♠♦✉r✐ ✫ ❘♦❞♥②❛♥s❦② ✭✷✵✶✻✮❀ ❉✐ ▼❛❣❣✐♦✱ ❑❡r♠❛♥✐✱ ❛♥❞ P❛❧♠❡r ✭✷✵✶✻✮❀ ❑✉rt③♠❛♥✱ ▲✉❝❦✱ ❛♥❞ ❩✐♠♠❡r♠❛♥♥ ✭✷✵✶✼✮

✹ ✴ ✷✻

slide-6
SLIDE 6

❙t❛t✐❝ ▼♦❞❡❧

❈♦♥s✉♠♣t✐♦♥ ❛♥❞ Pr♦❞✉❝t✐♦♥

♠❛①

yi

i di

1

ρ −

  • piyidi

❨✐❡❧❞s pi = yi

Y

ρ−1 ❋✐♥❛❧ ❣♦♦❞ ✭♥✉♠❡r❛✐r❡✮ ❝❛♥ ❜❡ ❝♦♥s✉♠❡❞ ♦r ✉s❡❞ ❢♦r ❝❛♣✐t❛❧

◮ Pr♦❞✉❝✐♥❣ K ❝❛♣✐t❛❧ ✉s❡s hkKbk+1

bk+1

✜♥❛❧ ❣♦♦❞s

C = Y − hkKbk+1

bk+1

❈♦♠♣❡t✐t✐✈❡ s❡❝t♦r ❝♦♥✈❡rts ✜♥❛❧ ❣♦♦❞ t♦ K

◮ ♠❛①

K QK − hkKbk+1 bk+1

⋆ Q = hkKbk ✺ ✴ ✷✻

slide-7
SLIDE 7

■♥t❡r♠❡❞✐❛t❡ ●♦♦❞ ❋✐r♠

❚❡❝❤♥♦❧♦❣② yi = Aikα

i

▼❛①✐♠✐③❡s r❡✈❡♥✉❡s ❧❡ss s♣❡♥❞✐♥❣ ♦♥ ❝❛♣✐t❛❧

◮ ▼✉st ✜♥❛♥❝❡ ❝❛♣✐t❛❧✱ ❣r♦ss ✐♥t❡r❡st r❛t❡ ri ◮ ❆❧s♦ ❛❧❧♦✇ ❢♦r ❛♥ ❡①♦❣❡♥♦✉s ✇❡❞❣❡✱ τ k

i

◮ ♠❛①

ki piyi τ k

i

− riQki

❋❖❈✿

◮ ki =

αρY 1−ρAρ

i

τ k

i riQ

  • 1

1−αρ

❚❤❡r❡ ❛r❡ ❛ ✜♥✐t❡ ♥✉♠❜❡r ♦❢ ❣r♦✉♣s ♦❢ ✜r♠s✱ ✐♥❞❡①❡❞ ❜② j

◮ ❊✈❡r② ✜r♠ i ❜❡❧♦♥❣s ❡①❛❝t❧② t♦ ♦♥❡ ❣r♦✉♣ j ✻ ✴ ✷✻

slide-8
SLIDE 8

❋✐♥❛♥❝✐❛❧ ■♥t❡r♠❡❞✐❛t✐♦♥

❋✐♥❛♥❝✐❛❧ ✐♥t❡r♠❡❞✐❛r✐❡s ♦r ❝❡♥tr❛❧ ❜❛♥❦ ✜♥❛♥❝❡ ✜r♠s

◮ Sb,i + Sg,i = Qki

  • ♦✈❡r♥♠❡♥t ❜♦♥❞s ✐♥ ♣♦s✐t✐✈❡ ♥❡t s✉♣♣❧②✿ BS = Bb + Bg

▼❛①✐♠✐③❡s ✈❛❧✉❡ s✉❜❥❡❝t t♦ r❡❣✉❧❛t♦r② ❝♦❧❧❛t❡r❛❧ ❝♦♥str❛✐♥t ♠❛①

Sb,i,Bb

  • j
  • i∈j

Sb,iridi + Bbrb +

  • N −
  • j
  • i∈j

Sb,idi − Bb

  • r

s✳t✳ V ≥

  • j

θ∆j

  • i∈j

Sb,idi νj + θBb

✼ ✴ ✷✻

slide-9
SLIDE 9

❊♥❞♦❣❡♥♦✉s ❙♣r❡❛❞s ❢r♦♠ ▲❙❆Ps

λ ✐s ▲❛❣r❛♥❣✐❛♥ ▼✉❧t✐♣❧✐❡r rb − r =

λ 1+λθ

Sg,j =

  • i∈j Sg,idi

ri − r =

λ 1+λθ∆jνj

  • s∈j Qks − Sg,s

νj−1

❊q✉✐❧✐❜r✐✉♠ ✽ ✴ ✷✻

slide-10
SLIDE 10

▲❙●❇❇✴▲❙❈❇❇✿ ❉✐r❡❝t ❊✛❡❝ts ♦♥ ❙♣r❡❛❞s

❍♦❧❞✐♥❣ ✜r♠ ✐♥✈❡st♠❡♥t ❞❡❝✐s✐♦♥s✱ ki✱ ✜①❡❞✿ ▲❙●❇❇✱ Bg ↑

◮ ▲♦♦s❡♥s ❝♦❧❧❛t❡r❛❧ ❝♦♥str❛✐♥t ❛♥❞ ♠✉❧t✐♣❧✐❡r

λ 1+λ

◮ Pr♦♣♦rt✐♦♥❛❧❧② ❞❡❝r❡❛s❡s ✜r♠ s♣r❡❛❞s

▲❙❈❇❇✱ Sg,i ↑

◮ ▲♦♦s❡♥s ❝♦❧❧❛t❡r❛❧ ❝♦♥str❛✐♥t ❛♥❞ ♠✉❧t✐♣❧✐❡r

λ 1+λ

◮ ❉✐r❡❝t❧② ❧♦✇❡rs s♣r❡❛❞ ❢♦r ✜r♠s i ∈ j ❜✉t ♥♦t i /

∈ j ✭✉♥❞❡r ❝♦♥❞✐t✐♦♥ t❤❛t ❜❛♥❦s ❞♦ ♥♦t ❤♦❧❞ t♦♦ ♠✉❝❤ ❣♦✈❡r♥♠❡♥t ❞❡❜t r❡❧❛t✐✈❡ t♦ t❤❡✐r ✇❡❛❧t❤✮

✾ ✴ ✷✻

slide-11
SLIDE 11

❲❡✐❣❤t❡❞ ❆✈❡r❛❣❡ ■♥t❡r❡st ❘❛t❡

❉❡✜♥❡ ✇❡✐❣❤t❡❞✲❛✈❡r❛❣❡ ✐♥t❡r❡st r❛t❡✱ rA✿

1 rA =

i

(τ k

i ) αρ

  • 1

1−αρ

1 ri

  • αρ

1−αρ di

1−ρ

ρ

i

τ k

i

  • 1

1−αρ

1 ri

  • 1

1−αρ di

1−α

i

(τ k

i ) αρ

  • 1

1−αρ

di 1−ρ

ρ

i

(τ k

i )

  • 1

1−αρ

di 1−α ❉❡✜♥❡ ✐♥t❡r❡st r❛t❡ ✇❡❞❣❡✿ rτ,i = rA

ri

rA ❛✛❡❝ts K✱ ♥♦t ❛❧❧♦❝❛t✐♦♥ rτ,i ❛✛❡❝ts ❛❧❧♦❝❛t✐♦♥✱ ♥♦t ❝❤♦✐❝❡ ♦❢ K

✶✵ ✴ ✷✻

slide-12
SLIDE 12

❖♣t✐♠❛❧ ❆❧❧♦❝❛t✐♦♥

Y = Kα

  • ❈❛♣✐t❛❧

i

  • rτ,i

τ k

i

αρ

1 1−αρ di

1

ρ( 1−αρ 1−α )

i

(τ k

i ) αρ

  • 1

1−αρ

di (1−ρ)α

ρ(1−α)

i

(τ k

i )

  • 1

1−αρ

di α

  • ❆❧❧♦❝❛t✐♦♥

Pr♦♣♦s✐t✐♦♥ ❚❤❡ ♦✉t♣✉t✲♠❛①✐♠✐③✐♥❣ ❛❧❧♦❝❛t✐♦♥ ♦❢ ✜r♠ ✐♥t❡r❡st r❛t❡ ✇❡❞❣❡s s❛t✐s✜❡s r∗

τ,i ∝ τ k i

❊q✉✐✈❛❧❡♥t❧②✱ r∗

i ∝ rA τ k

i ✶✶ ✴ ✷✻

slide-13
SLIDE 13

◆❑ ❉❙●❊ ▼♦❞❡❧ ✇✐t❤ ▲❙❆Ps

❆❣❡♥ts ✐♥ ◆❑ ❉❙●❊ ♠♦❞❡❧

◮ ❍♦✉s❡❤♦❧❞s ❝❛♥ ❤♦❧❞ ❜♦♥❞s ❢❛❝✐♥❣ ❤♦❧❞✐♥❣ ❝♦sts ❍♦✉s❡❤♦❧❞✬s ♣r♦❜❧❡♠ ⋆ ❍❛❜✐ts ❛♥❞ ❧❛❜♦r s✉♣♣❧② ❡♥t❡r ✉t✐❧✐t② ⋆ ❙♣❧✐t ✐♥t♦ ❜❛♥❦❡rs ❛♥❞ ✇♦r❦❡rs ◮ ■♥t❡r♠❡❞✐❛t❡ ❣♦♦❞s ♣r♦❞✉❝❡rs ✭✷ r❡♣r❡s❡♥t❛t✐✈❡ ✜r♠s✮ ◮ ❈❛♣✐t❛❧ ♣r♦❞✉❝❡rs ⋆ Pr✐❝❡ ♦❢ ❝❛♣✐t❛❧✿ Qt ❈❛♣✐t❛❧ ♣r♦❞✉❝❡r✬s ♣r♦❜❧❡♠ ◮ ▼♦♥♦♣♦❧✐st✐❝❛❧❧② ❝♦♠♣❡t✐t✐✈❡ r❡t❛✐❧❡rs ⋆ ❉❡❧✐✈❡r st✐❝❦② ♣r✐❝❡s ❘❡t❛✐❧ ❣♦♦❞ ✜r♠✬s ♣r♦❜❧❡♠ ◮ ❋✐♥❛♥❝✐❛❧ ✐♥t❡r♠❡❞✐❛r✐❡s ✭❢❛❝❡ ❛❞❞✐t✐♦♥❛❧ r❡❣✉❧❛t♦r②

❝♦♥str❛✐♥ts✮

◮ ❈❡♥tr❛❧ ❜❛♥❦ ❛♥❞ ❣♦✈❡r♥♠❡♥t ✶✷ ✴ ✷✻

slide-14
SLIDE 14

Pr♦❞✉❝t✐♦♥

❚❤❡r❡ ❛r❡ t✇♦ ❣r♦✉♣s ♦❢ ✜r♠s✱ ✐♥❞❡①❡❞ ❜② j Yj,t = AtKα

j,tL1−α j,t

❆❣❣r❡❣❛t✐♦♥ ❛❝r♦ss ✜r♠s✿ Ym,t =

  • j

ωjY ρ

j,t

1

ρ ✶✸ ✴ ✷✻

slide-15
SLIDE 15

❋✐r♠ ❈❛♣✐t❛❧

❆t t❤❡ ❡♥❞ ♦❢ ♣❡r✐♦❞ t✱ ❛♥ ✐♥t❡r♠❡❞✐❛t❡ ❣♦♦❞s ♣r♦❞✉❝❡r ❛❝q✉✐r❡s ❝❛♣✐t❛❧ Kj,t+1 ❢♦r ✉s❡ ✐♥ t + 1 ◆♦ ❛❞❥✉st♠❡♥t ❝♦sts ❛♥❞ ♥♦ ✜♥❛♥❝✐♥❣ ❢r✐❝t✐♦♥s ❚❤❡ ✜r♠ ✜♥❛♥❝❡s Kj,t+1 ❜② ♦❜t❛✐♥✐♥❣ ❢✉♥❞s ❢r♦♠ ✐♥t❡r♠❡❞✐❛r✐❡s ✉s✐♥❣ ❡①t❡r♥❛❧ ✜♥❛♥❝✐♥❣ Sj,t ❋✐r♠s ❡①♦❣❡♥♦✉s❧② ❡♥❞♦✇❡❞ ✇✐t❤ s♦♠❡ ❝❛♣✐t❛❧ ❡❛❝❤ ♣❡r✐♦❞ t❤❛t t❤❡② ♠✉st s♣❡♥❞ ♦♥ ✐♥✈❡st♠❡♥t✿ Kj,t = Kj,I + Sj,t

✶✹ ✴ ✷✻

slide-16
SLIDE 16

❆❣❣r❡❣❛t✐♦♥ ❛❝r♦ss ❚②♣❡s

❋♦r ❡❛❝❤ t②♣❡✱ ❡✈♦❧✉t✐♦♥ ♦❢ ✜r♠ ❝❛♣✐t❛❧✿ Kj,t+1 = ξt+1[Ij,t + (1 − δ)Kj,t] ❋✐r♠ ✐♥♣✉ts ❢✉❧❧② s✉❜st✐t✉t❛❜❧❡✱ s♦✿ Kt+1 = ξt+1[It + (1 − δ)Kt] Lt = L1,t + L2,t

✶✺ ✴ ✷✻

slide-17
SLIDE 17

▲❛❜♦r ❛♥❞ ❈❛♣✐t❛❧ ❉❡♠❛♥❞

❉❡✜♥❡ Pm,t ❛s t❤❡ r❡❧❛t✐✈❡ ♣r✐❝❡ ♦❢ ✐♥t❡r♠❡❞✐❛t❡ ❣♦♦❞s✳ Wt = Pm,t Y 1−ρ

m,t Y ρ j,t

Lj,t ωjρ(1 − α) ❆❧s♦✱ ❣r♦ss ♣r♦✜ts ♣❡r ✉♥✐t ♦❢ ❝❛♣✐t❛❧ ❢♦r ✜r♠ j✱ Zj,t✱ ❜❡❝♦♠❡s✿ Zj,t = ωj (1 − ρ(1 − α)) Pm,tY 1−ρ

m,t Y ρ j,t

ξtKj,t−1 ❉✐✛❡r❡♥❝❡s ✐♥ r❡t✉r♥ ♦♥ ❝❛♣✐t❛❧s ✐♠♣❧② ❞✐✛❡r❡♥❝❡s ✐♥ t❤❡ ❛❧❧♦❝❛t✐♦♥ ♦❢ ❝❛♣✐t❛❧ ❜❡t✇❡❡♥ ❣r♦✉♣s✿ Rk,j,t+1 = Zj,t+1 + (1 − δ)Qt+1 Qt ξt+1

✶✻ ✴ ✷✻

slide-18
SLIDE 18

❋✐♥❛♥❝✐❛❧ ■♥t❡r♠❡❞✐❛r✐❡s

❚❤❡ ❜❛❧❛♥❝❡ s❤❡❡t ♦❢ ❛ ❜❛♥❦ ✐s✿ QtSb,1,t + QtSb,2,t + qtBb,t = Nt + dt, ✇❤❡r❡ Nt ✐s ❜❛♥❦ ♥❡t ✇♦rt❤✱ dt ✐s ❞❡♣♦s✐ts ❤❡❧❞✱ ❛♥❞ Sb,j,t ❢♦r j ∈ {1, 2} ✐s t❤❡ s❡❝✉r✐t✐❡s ❤♦❧❞✐♥❣s ❜② t❤❡ ❜❛♥❦ ♦❢ ✜r♠s ✶ ❛♥❞ ✷✱ r❡s♣❡❝t✐✈❡❧②✳ ◆❡t ✇♦rt❤ ✐s t❤❡ ❞✐✛❡r❡♥❝❡ ❜❡t✇❡❡♥ t❤❡ ❣r♦ss r❡t✉r♥ ♦♥ ❛ss❡ts ❛♥❞ t❤❡ ❝♦st ♦❢ ❞❡♣♦s✐ts✿ Nt = Rk,1,tQt−1Sb,1,t−1 + Rk,2,tQt−1Sb,2,t−1 + Rb,tqt−1Bb,t−1 − Rtdt−1

✶✼ ✴ ✷✻

slide-19
SLIDE 19

❋✐♥❛♥❝✐❛❧ ■♥t❡r♠❡❞✐❛r✐❡s ✭❝♦♥t✳✮

❚❤❡ ❜❛♥❦ ✇✐❧❧ ♠❛①✐♠✐③❡ ✐ts ❡①♣❡❝t❡❞ ❞✐s❝♦✉♥t❡❞ ✈❛❧✉❡ ♦❢ ♥❡t ✇♦rt❤ s✉❜❥❡❝t t♦ ❛❣❡♥❝② ❝♦♥str❛✐♥t ✭❢r♦♠ ✐♠♣❡r❢❡❝t ♠♦♥✐t♦r✐♥❣ ♣r♦❜❧❡♠✮✿ Vt = Et

  • i=1

(1 − σ)σi−1Λt,t+1Nt+1 s✳t✳ Vt ≥ θQtS

νs,1 b,1,t + θ∆sQtS νs,2 b,2,t + ∆θqtBνb b,t

❙♦❧✉t✐♦♥ ✶✽ ✴ ✷✻

slide-20
SLIDE 20

❈❡♥tr❛❧ ❇❛♥❦

❚❤❡ ❈❇ ❝❛♥ ✐ss✉❡ r✐s❦❧❡ss s❤♦rt✲t❡r♠ ❞❡❜t Dg,t ✇❤✐❝❤ ♣❛② Rt+1✱ s♦ ❜❛❧❛♥❝❡ s❤❡❡t ✐s✿ Q1,tSg,1,t + qtBg,t = Dg,t, ✇❤❡r❡ Sg,1,t ✐s ❈❇ ❤♦❧❞✐♥❣s ♦❢ t②♣❡ ✶ s❡❝✉r✐t✐❡s ❛♥❞ Bg,t ✐s ❈❇ ❤♦❧❞✐♥❣s ♦❢ ❣♦✈❡r♥♠❡♥t ❜♦♥❞s✳ ■♥t❡r❡st ❘❛t❡ P♦❧✐❝② it = max

  • 0, i + κππt + κy(log(Yt) − log(Y ∗

t )) + ǫt

  • ❋✐s❤❡r ❊q✉❛t✐♦♥

1 + it = Rt+1 Pt+1 Pt

✶✾ ✴ ✷✻

slide-21
SLIDE 21

❈r❡❞✐t P♦❧✐❝② ❛♥❞ ■♠♣❧✐❝❛t✐♦♥s

❈❡♥tr❛❧ ❜❛♥❦ ▲❙❆Ps ✐♥✈♦❧✈❡ ♣✉r❝❤❛s✐♥❣ ❛ ❢r❛❝t✐♦♥✱ ϕs,1,t ❛♥❞ ϕb,t✱ ♦❢ ♦✉tst❛♥❞✐♥❣ t②♣❡ ✶ ♣r✐✈❛t❡✲s❡❝t♦r s❡❝✉r✐t✐❡s ♦r ❧♦♥❣✲t❡r♠ ❣♦✈❡r♥♠❡♥t s❡❝✉r✐t✐❡s✱ r❡s♣❡❝t✐✈❡❧②✳ Sg,1,t = ϕs,1,tS1,t−1 Bg,t = ϕb,tBt−1

❈❧❡❛r✐♥❣ ❛♥❞ ❊q✉✐❧✐❜r✐✉♠ ✷✵ ✴ ✷✻

slide-22
SLIDE 22

P❛r❛♠❡t❡rs

Parameters Value From Gertler and Karadi (2013) Households Discount rate, β 0.995 Habit parameter, h 0.815 Relative utility weight of labor, χ 3.482 Steady-state Treasury supply, B/Y 0.450 Proportion of long-term Treasury holdings of the households, ¯ Bh/B 0.750 Portfolio adjustment cost, κ 1.000 Inverse Frisch elasticity of labor supply, ϕ 0.276 Financial Intermediaries and Households Fraction of capital that can be diverted, θ 0.345 Proportional advantage in seizure rate of government debt, ∆ 0.500 Transfer to the entering bankers, X 0.0062 Survival rate of the bankers, σ 0.92 Intermediate Good Firms Capital share, α 0.330 Depreciation rate, δ 0.025 Capital-Producing Firms Inverse elasticity of net investment to the price of capital, ηi 1.728 Retail Firms Elasticity of substitution, ǫ 4.167 Probability of keeping the price constant, γ 0.779 Government Steady-state proportion of government expenditures, G/Y 0.200 Inflation coefficient in the Taylor rule, κπ 1.500 Markup coefficient in the Taylor rule, κX

  • 0.125

New Parameters New Parameters Financial Intermediaries and Households Regulatory constraint parameter on government debt, νb 1.000 Regulatory constraint parameter on type 1 securities, νs,1 1.200 Regulatory constraint parameter on type 2 securities, νs,2 1.200 ∆s,2, 1.0531 K1,Int/K1, 0.6 ¯ Kh,1/K1, 0.3 ¯ Kh,2/K2, 0.3 κs,1, 1 κs,2, 1 Intermediate Good Firms CES parameter, ρ 0.9 Type 1 labor share in production 0.5 Type 2 labor share in production 0.5

✷✶ ✴ ✷✻

slide-23
SLIDE 23

❉✐✛❡r❡♥t ❈❛s❡s

(a) Central Bank Purchases

10 20 30 40 0.5 1 1.5 2 2.5 % οf GDP Quarters Government Corporate

(b) Y , Baseline

10 20 30 40 −0.01 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 % Change from Steady State Quarters

(c) Y , Perfect Substitutes

10 20 30 40 −0.02 0.02 0.04 0.06 0.08 0.1 0.12 % Change from Steady State Quarters

(d) Y , ZLB

10 20 30 40 0.1 0.2 0.3 0.4 0.5 % Change from Steady State Quarters

Figure 3: Effect of LSAPs on Output with Perfect Substitutes or ZLB

✷✷ ✴ ✷✻

slide-24
SLIDE 24

■♠♣✉❧s❡ ❘❡s♣♦♥s❡s

(a) Central Bank Purchases

10 20 30 40 0.5 1 1.5 2 2.5 % οf GDP Quarters Government Corporate

(b) Y

10 20 30 40 −0.01 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 % Change from Steady State Quarters

(c) L

5 10 15 20 25 30 35 40 −0.04 −0.02 0.02 0.04 0.06 0.08 0.1 Quarters

(d) K

10 20 30 40 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 % Change from Steady State Quarters

(e) K1

5 10 15 20 25 30 35 40 −2 −1.5 −1 −0.5 0.5 1 1.5 2 Quarters

(f) K2

5 10 15 20 25 30 35 40 −2 −1.5 −1 −0.5 0.5 1 1.5 2 Quarters

(g) E[RK,2] − E[RK,1]

10 20 30 40 −0.04 −0.02 0.02 0.04 0.06 0.08 0.1 0.12 0.14 Change in Spread Quarters

(h) Sb,1

10 20 30 40 −20 −15 −10 −5 5 10 % Change from Steady State Quarters

(i) Sb,2

5 10 15 20 25 30 35 40 −20 −15 −10 −5 5 10 Quarters

Figure 1: Government and Private Sector Asset Purchase Shocks

✷✸ ✴ ✷✻

slide-25
SLIDE 25

▼✐s❛❧❧♦❝❛t✐♦♥

10 20 30 40 −0.005 0.005 0.01 0.015 0.02 0.025 0.03 Quarters Change, % of Steady State Output LSAP Output Difference Misallocation Effect Figure 2: Misallocation Effect and Difference in LSAP Effectiveness

ˆ Yt = AtKα

t L(1−α) t

j=2

  • j=1

ω

1 1−ρ

j

1−ρ

ρ ✷✹ ✴ ✷✻

slide-26
SLIDE 26

❩▲❇

5 10 15 20 25 30 −0.005 0.005 0.01 0.015 0.02 0.025 Quarters % Change Relative to Baseline No ZLB ZLB

▲✐tt❧❡ ❝❤❛♥❣❡ ✐♥ ♠✐s❛❧❧♦❝❛t✐♦♥✱ ❜✉t ♠✉❝❤ ❜✐❣❣❡r ♦✉t♣✉t ❣❛✐♥ ❢r♦♠ ▲❙❆Ps

✷✺ ✴ ✷✻

slide-27
SLIDE 27

▲❛st ❙❧✐❞❡

◆♦♥✲♥❡❣❧✐❣✐❜❧❡ ♠✐s❛❧❧♦❝❛t✐♦♥ ❝♦st ♦❢ ▲❙❈❇❇s ■♠♣❧✐❡s tr❛❞❡ ♦✛ ❢♦r s✉❝❤ ♣♦❧✐❝✐❡s t❤❛t s❡❡♠s t♦ ❜❡ ❧❛r❣❡❧② ❛❜s❡♥t ❢r♦♠ ❞❡❜❛t❡

✷✻ ✴ ✷✻

slide-28
SLIDE 28

❘♦❛❞♠❛♣

❙t❛t✐❝ ▼♦❞❡❧ ◆❡✇ ❑❡②♥❡s✐❛♥ ❉❙●❊ ▼♦❞❡❧ ✇✐t❤ ▲❙❆Ps ❙✉❣❣❡st✐✈❡ ❊✈✐❞❡♥❝❡ ✲ ❊❈❇ ❈❙PP

◮ ❇❛❝❦❣r♦✉♥❞ ♦♥ ❊❈❇ ❈♦r♣♦r❛t❡ ❙❡❝t♦r P✉r❝❤❛s❡ Pr♦❣r❛♠ ◮ ❈❤❛♥❣❡s ✐♥ ❨✐❡❧❞s ❛♥❞ ❙♣r❡❛❞s ◮ ❈❤❛♥❣❡s ✐♥ ■ss✉❛♥❝❡s ◮ ❈❤❛♥❣❡s ✐♥ ■♥✈❡st♠❡♥t ✷✻ ✴ ✷✻

slide-29
SLIDE 29

❊❈❇ ❈♦r♣♦r❛t❡ ❙❡❝t♦r P✉r❝❤❛s❡ Pr♦❣r❛♠ ✭❈❙PP✮

❊❧✐❣✐❜✐❧✐t② ❝r✐t❡r✐❛ ✭▲❛r❣❡ ❋✐r♠s✮

◮ ❊❧✐❣✐❜❧❡ ❢♦r ❊✉r♦s②st❡♠ ❝♦❧❧❛t❡r❛❧ ❝r❡❞✐t ♦♣❡r❛t✐♦♥s ◮ ❊✉r♦✲❞❡♥♦♠✐♥❛t❡❞✱ ✻ ♠♦♥t❤ t♦ ✸✵ ②❡❛r ♠❛t✉r✐t② ◮ ■ss✉❡❞ ❜② ♥♦♥✲❜❛♥❦ ❊❯ ❛r❡❛ ✜r♠ ✭❢♦r❡✐❣♥ ♣❛r❡♥t ❛❧❧♦✇❡❞✮ ◮ ❘❛t❡❞ ❇❇❇✲ ♦r ❜❡tt❡r

❚✐♠✐♥❣

◮ ❆♥♥♦✉♥❝❡❞ ♦♥ ▼❛r❝❤ ✶✵✱ ✷✵✶✻ ◮ P✉r❝❤❛s❡s ❜❡❣❛♥ ♦♥ ❏✉♥❡ ✽✱ ✷✵✶✻ ◮ ❈♦♥t❡♠♣♦r❛♥❡♦✉s ❇❉ r❡♣♦rts ❛r❣✉❡ t♦ ✐♥✈❡st ❜❛s❡❞ ♦♥

r❡❧❛t✐✈❡ ♣r✐❝❡ ❡✛❡❝ts ✐♥❞✉❝❡❞ ❜② ❜♦♥❞ ❜✉②

✷✻ ✴ ✷✻

slide-30
SLIDE 30

▲❛r❣❡ s✐③❡✱ ❧❛r❣❡ ❡✛❡❝t ♦♥ ②✐❡❧❞s ❛♥❞ s♣r❡❛❞s

❆r♦✉♥❞ ✼✵ ❜✐❧❧✐♦♥ ❡✉r♦s ✭❛s ♦❢ ✷✴✶✼✮

◮ ❆ s✐❣♥✐✜❝❛♥t ❢r❛❝t✐♦♥ ♦❢ ♠❛r❦❡t ✭7 − 10%✮

▲❛r❣❡ ❡✛❡❝t ♦♥ ②✐❡❧❞s ❢♦r ✐♥✈❡st♠❡♥t✲❣r❛❞❡ ❊❯ ❜♦♥❞s✿

◮ ❆✈❡r❛❣❡ ❜♦♥❞ ②✐❡❧❞ ❢❡❧❧ ❜② ❃✺✵❜♣s ◮ P✉r❝❤❛s❡❞ ❜♦♥❞s ❝❛♥ ❢❛❧❧ ❜② ♠♦r❡ ◮ ✶✺✪ ❤❛❞ ♥❡❣❛t✐✈❡ ②✐❡❧❞s ✭❛s ♦❢ ✻✴✶✻✮ ✷✻ ✴ ✷✻

slide-31
SLIDE 31

❈❤❛♥❣❡ ✐♥ ❨✐❡❧❞s

❈♦r♣♦r❛t❡s✱ ◆♦t ❇❛♥❦s ❙♦✉r❝❡✿ ❇❛♥❦ ♦❢ ❆♠❡r✐❝❛ ▼❡r✐❧❧✲▲②♥❝❤ ✭✈✐❛ ❋❚✮

▲❛r❣❡ ❞❡❝❧✐♥❡ ✐♥ s♣r❡❛❞s ✫ ②✐❡❧❞s ❆t ♦♥❡ ♣♦✐♥t✱ ✶✺✪ ♦❢ ❊❯ ❝♦r♣✳ ❜♦♥❞s ❤❛❞ ♥❡❣❛t✐✈❡ ②✐❡❧❞

✷✻ ✴ ✷✻

slide-32
SLIDE 32

❈❤❛♥❣❡s ✐♥ ■ss✉❛♥❝❡s

✷✵✶✺✲✵✼ ✷✵✶✻✲✵✶ ✷✵✶✻✲✵✼ ✷✵✶✼✲✵✶ 2 4 6 8 10 ❉❛t❡ ❨❡❛r✲♦✈❡r✲②❡❛r %∆ ❊❯✲❛r❡❛ ❉❡❜t ❙❡❝✉r✐t② ■ss✉❛♥❝❡s

❙♦✉r❝❡✿ ❊❈❇✱ ❉❛t❛ ■t❡♠ ❙❊❈✳▼✳■✽✳✶✶✵✵✳❋✸✸✵✵✵✳◆✳■✳❩✵✶✳❆✳❩ ✷✻ ✴ ✷✻

slide-33
SLIDE 33

❈❤❛♥❣❡s ✐♥ ■♥✈❡st♠❡♥t

.008 .009 .01 .011 .012 .013

  • Avg. investment rate

2014q1 2014q3 2015q1 2015q3 2016q1 2016q3

Time

Untreated - bottom 50 Untreated - top 50 Treated

❋✐❣✉r❡✿ ■♥✈❡st♠❡♥t ❘❛t❡s ♦❢ ❙✉❜❣r♦✉♣s ✭❜② ❆ss❡ts✮ ♦❢ ●❡r♠❛♥ ❛♥❞ ❋r❡♥❝❤ ♣✉❜❧✐❝ ✜r♠s✳

◆♦t❡✿ ❈♦♠♣✉st❛t ●❧♦❜❛❧✱ ❆✉t❤♦r✬s ❈❛❧❝✉❧❛t✐♦♥s✳ ✷✻ ✴ ✷✻

slide-34
SLIDE 34

❇✉tt♦♥s

✷✻ ✴ ✷✻

slide-35
SLIDE 35

❊q✉✐❧✐❜r✐✉♠

❘❡t✉r♥

  • ✐✈❡♥ ❡①♦❣❡♥♦✉s ❜❛♥❦ ♥❡t ✇♦rt❤✱ N✱ ✜r♠✲❧❡✈❡❧ ♣r♦❞✉❝t✐✈✐t✐❡s ❛♥❞

✇❡❞❣❡s✱

  • Ai, τ k

i

  • ∀i✱ ❝❡♥tr❛❧ ❜❛♥❦ ♣✉r❝❤❛s❡s ♦❢ ❝♦r♣♦r❛t❡ ❜♦♥❞s✱
  • Sg,i
  • ∀i✱

❛♥❞ ❣♦✈❡r♥♠❡♥t ❜♦♥❞s✱ Bg✱ ❡q✉✐❧✐❜r✐✉♠ ✐♥ t❤✐s ♠♦❞❡❧ ✐s ❛ s❡t ♦❢ ❛❧❧♦❝❛t✐♦♥s✱

  • C, Y, K, Bb, Dh
  • ❛♥❞
  • ki, yi, Sb,i
  • ∀i✱ ❛♥❞ ♣r✐❝❡s✱
  • Q, r, rB
  • ❛♥❞
  • ri, pi
  • ∀i✱ s✉❝❤ t❤❛t ❤♦✉s❡❤♦❧❞s ♠❛①✐♠✐③❡ ❝♦♥s✉♠♣t✐♦♥ s✉❜❥❡❝t t♦ t❤❡✐r

❜✉❞❣❡t ❝♦♥str❛✐♥t❀ ✐♥t❡r♠❡❞✐❛t❡ ❣♦♦❞ ✜r♠s✱ ✜♥❛❧ ❣♦♦❞ ✜r♠s✱ ❛♥❞ ❝❛♣✐t❛❧ ♣r♦❞✉❝❡rs ♠❛①✐♠✐③❡ ♣r♦✜ts❀ ✜♥❛♥❝✐❛❧ ✐♥t❡r♠❡❞✐❛r✐❡s ♠❛①✐♠✐③❡ ♣r♦✜ts s✉❜❥❡❝t t♦ t❤❡✐r ❝♦❧❧❛t❡r❛❧ ❝♦♥str❛✐♥t❀ ❛♥❞ ❝❧❡❛r✐♥❣ ❝♦♥❞✐t✐♦♥s ❤♦❧❞✳

✷✻ ✴ ✷✻

slide-36
SLIDE 36

❆♥❛❧②t✐❝❛❧ ❙♦❧✉t✐♦♥ ❢♦r ❑

❘❡t✉r♥

K =

i

(riτ k

i ) αρ

  • 1

1−αρ

di

  • 1−ρ

ρ(1−α+bk)

i

(riτ k

i )

  • 1

1−αρ

di

  • 1−α

1−α+bk

  • hk

αρ

  • 1

1−α+bk

✷✻ ✴ ✷✻

slide-37
SLIDE 37

❲❡✐❣❤t❡❞✲❆✈❡r❛❣❡ ■♥t❡r❡st ❘❛t❡

❘❡t✉r♥

1 rA =

i

(τ k

i ) αρ

  • 1

1−αρ

1 ri

  • αρ

1−αρ di

1−ρ

ρ

i

τ k

i

  • 1

1−αρ

1 ri

  • 1

1−αρ di

1−α

i

(τ k

i ) αρ

  • 1

1−αρ

di 1−ρ

ρ

i

(τ k

i )

  • 1

1−αρ

di 1−α .

✷✻ ✴ ✷✻

slide-38
SLIDE 38

❍♦✉s❡❤♦❧❞s

❘❡t✉r♥

❊❛❝❤ ❤♦✉s❡❤♦❧❞✱ 1 − f ✏✇♦r❦❡rs✑ ❛♥❞ f ✏❜❛♥❦❡rs✑ ❲♦r❦❡rs s✉♣♣❧② ❧❛❜♦r ❛♥❞ r❡t✉r♥ t❤❡✐r ✇❛❣❡s t♦ t❤❡ ❤♦✉s❡❤♦❧❞ ❊❛❝❤ ❜❛♥❦❡r ♠❛♥❛❣❡s ♣❛rt ♦❢ t❤❡ r❡♣r❡s❡♥t❛t✐✈❡ ✐♥t❡r♠❡❞✐❛r② ❛♥❞ tr❛♥s❢❡rs ❡❛r♥✐♥❣s ❜❛❝❦ t♦ ❤♦✉s❡❤♦❧❞ P❡r❢❡❝t ❝♦♥s✉♠♣t✐♦♥ ✐♥s✉r❛♥❝❡ ✇✐t❤✐♥ t❤❡ ❢❛♠✐❧② ❲❡ ❛❧s♦ ❛❧❧♦✇ ❤♦✉s❡❤♦❧❞s t♦ ❞✐r❡❝t❧② ❤♦❧❞ s❡❝✉r✐t✐❡s ✐♥ t❤❡ ❢❛❝❡ ♦❢ ❤♦❧❞✐♥❣ ❝♦sts

❖✈❡r❝♦♠✐♥❣ s❛✈✐♥❣ ♦✉t ♦❢ ❝♦♥str❛✐♥ts ✷✻ ✴ ✷✻

slide-39
SLIDE 39

❍♦✉s❡❤♦❧❞s

❘❡t✉r♥

❚♦ ❧✐♠✐t ❜❛♥❦❡rs✬ ❛❜✐❧✐t② t♦ s❛✈❡ t♦ ♦✈❡r❝♦♠❡ ✜♥❛♥❝✐❛❧ ❝♦♥str❛✐♥ts✿

◮ ❲✐t❤ ✐✐❞ ♣r♦❜✳ 1 − σ✱ ❛ ❜❛♥❦❡r ❡①✐ts ♥❡①t ♣❡r✐♦❞✳ ✭❛✈❡r❛❣❡

s✉r✈✐✈❛❧ t✐♠❡ ❂

1 1−σ ✮

◮ ❯♣♦♥ ❡①✐t✐♥❣✱ ❛ ❜❛♥❦❡r tr❛♥s❢❡rs r❡t❛✐♥❡❞ ❡❛r♥✐♥❣s t♦ t❤❡

❤♦✉s❡❤♦❧❞ ❛♥❞ ❜❡❝♦♠❡s ❛ ✇♦r❦❡r✳

◮ ❊❛❝❤ ♣❡r✐♦❞✱ (1 − σ)f ✇♦r❦❡rs r❛♥❞♦♠❧② ❜❡❝♦♠❡ ❜❛♥❦❡rs✱

❦❡❡♣✐♥❣ t❤❡ ♥✉♠❜❡r ✐♥ ❡❛❝❤ ♦❝❝✉♣❛t✐♦♥ ❝♦♥st❛♥t

◮ ❊❛❝❤ ♥❡✇ ❜❛♥❦❡r r❡❝❡✐✈❡s ❛ ✧st❛rt ✉♣✧ tr❛♥s❢❡r ❢r♦♠ t❤❡

❢❛♠✐❧②

✷✻ ✴ ✷✻

slide-40
SLIDE 40

❍♦✉s❡❤♦❧❞s Pr♦❜❧❡♠ ✭✇✐t❤♦✉t s❡❝✉r✐t✐❡s ❤♦❧❞✐♥❣s ❛♥❞ ❤♦❧❞✐♥❣ ❝♦sts✮

max Et

  • i=0

βi[ln(Ct+i − hCt+i−1) − χ 1 + ϕL1+ϕ

t+i ]

s✳t✳ Ct = WtLt + Πt − X + Tt + RtDh,t−1 − Dh,t. Dh,t ≡ s❤♦rt t❡r♠ ❞❡❜t ✭✐♥t❡r♠❡❞✐❛r② ❞❡♣♦s✐ts ❛♥❞ ❣♦✈❡r♥♠❡♥t ❞❡❜t✮ Πt − X ≡ ♣❛②♦✉ts t♦ t❤❡ ❤♦✉s❡❤♦❧❞ ❢r♦♠ ✜r♠ ♦✇♥❡rs❤✐♣ ♥❡t t❤❡ tr❛♥s❢❡r ✐t ❣✐✈❡s t♦ ✐ts ♥❡✇ ❜❛♥❦❡rs✳ Λt,t+1 = Etβ uC,t+1

uC,t

✇✐t❤ ❤♦❧❞✐♥❣ ❝♦sts ✷✻ ✴ ✷✻

slide-41
SLIDE 41

❍♦✉s❡❤♦❧❞s ✭✇✐t❤ ❤♦❧❞✐♥❣ ❝♦sts✮

❘❡t✉r♥

❲❡ ❛❧s♦ ❛❧❧♦✇ ❤♦✉s❡❤♦❧❞s t♦ ❞✐r❡❝t❧② ❤♦❧❞ s❡❝✉r✐t✐❡s ✐♥ t❤❡ ❢❛❝❡ ♦❢ ❤♦❧❞✐♥❣ ❝♦sts✳ ❉❡✜♥❡ Sh,j,t ❛s t❤❡ s❡❝✉r✐t✐❡s ♦❢ ✜r♠ j ❤❡❧❞ ❜② t❤❡ ❤♦✉s❡❤♦❧❞ ❛t t✐♠❡ t ❛♥❞ Bh,j,t ❛s s❡❝✉r✐t✐❡s ♦❢ t❤❡ ❣♦✈❡r♥♠❡♥t ❤❡❧❞ ❜② t❤❡ ❤♦✉s❡❤♦❧❞ ❛t t✐♠❡ t ✇✐t❤ ♣r✐❝❡ qt✳ ❍♦❧❞✐♥❣ ❝♦sts ❢♦r t②♣❡ j ✜r♠ s❡❝✉r✐t✐❡s ❛r❡

κj 2

(Sh,j− ¯

Sh,j)

2

Sh,j

✱ ✇❤❡r❡ ♣❛r❛♠❡t❡rs κj ❛♥❞ ¯ Sh,j ❛r❡ ♣♦s✐t✐✈❡ ❛♥❞ Sh,j ≥ ¯ Sh,j✳ ❍♦❧❞✐♥❣ ❝♦sts ❢♦r ❣♦✈❡r♥♠❡♥t s❡❝✉r✐t✐❡s ❛r❡ κj

2

(Bh− ¯

Bh)

2

Bh

✱ ✇❤❡r❡ ♣❛r❛♠❡t❡rs κj ❛♥❞ ¯ Bh ❛r❡ ♣♦s✐t✐✈❡ ❛♥❞ Bh ≥ ¯ Bh✳ ❈♦♥str❛✐♥t ✐s✿ Ct + Dh,t +

j=2

  • j=1

Qj,t(Sh,j,t + 1 2κ(Sh,j,t − ¯ Sh,j)2) + qt(Bh,t + 1 2κ(Bh,t − ¯ Bh)2) = WtLt + Πt + Tt − X + RtDh,t−1 +

j=2

  • j=1

Rk,j,tSh,j,t−1 + Rb,tBh,t−1

✷✻ ✴ ✷✻

slide-42
SLIDE 42

❘❡t❛✐❧ ●♦♦❞ ❋✐r♠s

❘❡t✉r♥ ▼♦♥♦♣♦❧✐st✐❝❛❧❧② ❝♦♠♣❡t✐t✐✈❡ r❡t❛✐❧❡rs ❜✉② ✐♥♣✉t ❢r♦♠ ✐♥t❡r♠❡❞✐❛t❡ ❣♦♦❞s ♣r♦❞✉❝❡rs ❛♥❞ r❡✲♣❛❝❦❛❣❡ ❛s ✜♥❛❧ ♦✉t♣✉t✳ ❙❡t ♥♦♠✐♥❛❧ ♣r✐❝❡s ♦♥ ❛ st❛❣❣❡r❡❞ ❜❛s✐s✳ Pm,t ✐s ♠❛r❣✐♥❛❧ ❝♦st ✭P −1

m,t ✐s t❤❡ ♠❛r❦✉♣✮✳

❚❤❡ ✜♥❛❧ ❣♦♦❞✱ Yt✱ ✐s ♣r♦❞✉❝❡❞ ✉s✐♥❣ ❛ ♠❛ss ♦♥❡ ❝♦♥t✐♥✉✉♠ ♦❢ ❞✐✛❡r❡♥t✐❛t❡❞ r❡t❛✐❧ ❣♦♦❞s ✉s✐♥❣ ❈❊❙ ♣r♦❞✉❝t✐♦♥✿ Yt = [ 1 Y

ǫ−1 ǫ ft

d f]

ǫ ǫ−1 .

❚❤❡ r❡t❛✐❧ ❣♦♦❞ ✜r♠ ❢❛❝❡s ❈❛❧✈♦ ♣r✐❝✐♥❣✳ ■t ❝❛♥ ❛❞❥✉st ✐ts ♣r✐❝❡ ✇✐t❤ ♣r♦❜❛❜✐❧✐t② 1 − γ✳ ❚❤❡ ✜r♠s ❝❤♦♦s❡ t❤❡ s❛♠❡ r❡s❡t ♣r✐❝❡ P ∗

t ✳ ❲❡ ❣❡t ❋❖❈✿ ∞

  • i=0

γiΛt,t+i[ P ∗

t

Pt+i − 1 1 − 1/ǫ Pmt+i]Yft+i = 0, ▲❖▼ ❢♦r ♣r✐❝❡s✿ Pt = [(1 − γ)(P ∗

t ) + γ(P 1−ǫ t−1 )] 1 1−ǫ .

✷✻ ✴ ✷✻

slide-43
SLIDE 43

❈❛♣✐t❛❧ Pr♦❞✉❝✐♥❣ ❋✐r♠s

❘❡t✉r♥

Pr♦❞✉❝❡ ♥❡✇ ❝❛♣✐t❛❧ t♦ s❡❧❧ t♦ t❤❡ ♠❛r❦❡t✱ s✉❜❥❡❝t t♦ ❛❞❥✉st♠❡♥t ❝♦sts ♦♥ t❤❡ r❛t❡ ♦❢ ♥❡t ✐♥✈❡st♠❡♥t max Et

  • t=τ

Λt,τ{QτIτ − [1 + f( Iτ Iτ−1 )]Iτ}. ❚❤✉s✱ t❤❡ ♣r✐❝❡ ♦❢ ❝❛♣✐t❛❧ ❣♦♦❞s ❝❛♥ ❜❡ ❞❡t❡r♠✐♥❡❞ ❢r♦♠ ♣r♦✜t ♠❛①✐♠✐③❛t✐♦♥ ❛s✿ Qt = 1 + f( It It−1 ) + It It−1 f ′( It It−1 ) − EtΛt,t+1(It+1 It )2f ′(It+1 It ).

✷✻ ✴ ✷✻

slide-44
SLIDE 44

❙♦❧✉t✐♦♥ t♦ ❇❛♥❦✬s Pr♦❜❧❡♠

❘❡t✉r♥ L = Et

  • Λt,t+1
  • 1 − σ
  • Nt+1 + σVt+1
  • + λt
  • Et
  • Λt,t+1
  • 1 − σ
  • Nt+1 + σVt+1
  • −θQtS

νs,1 b,1,t − θ∆sQtS νs,2 b,2,t − ∆θqtBνb b,t

  • ,

✇❤❡r❡ Nt = Rk,1,tQ1,t−1Sb,1,t−1 + Rk,2,tQ2,t−1Sb,2,t−1 + Rb,tqt−1Bb,t−1 − Rt

  • Q1,t−1Sb,1,t−1 + Q2,t−1Sb,2,t−1 + qt−1Bb,t−1 − Nt−1
  • .

▲❡t λt ❜❡ t❤❡ ▲❛❣r❛♥❣❡ ♠✉❧t✐♣❧✐❡r ❛ss♦❝✐❛t❡❞ ✇✐t❤ t❤❡ ✐♥❝❡♥t✐✈❡ ❝♦♥str❛✐♥t✳ ✷✻ ✴ ✷✻

slide-45
SLIDE 45

❙♦❧✉t✐♦♥ t♦ ❇❛♥❦✬s Pr♦❜❧❡♠

❚❤❡ ✜rst✲♦r❞❡r ❝♦♥❞✐t✐♦♥s ❤❡r❡ ②✐❡❧❞ Et

  • Λt,t+1
  • 1 − σ
  • + σ

∂Vt+1 ∂Nt+1

  • Rk,1,t+1 − Rt+1
  • =

λt

  • 1 + λt

θνs,1S

νs,1−1 b,1,t

, Et

  • Λt,t+1
  • 1 − σ
  • + σ

∂Vt+1 ∂Nt+1

  • Rk,2,t+1 − Rt+1
  • =

λt

  • 1 + λt

∆sθνs,2S

νs,2−1 b,2,t

, ❛♥❞ Et

  • Λt,t+1
  • 1 − σ
  • + σ

∂Vt+1 ∂Nt+1

  • Rb,t+1 − Rt+1
  • =

λt

  • 1 + λt

∆θνbBνb−1

b,t

, ♥♦t✐♥❣ t❤❛t ∂Vt ∂Nt = Et ˜ Λt,t+1

  • (Rk,t+1 − Rt+1)φt + Rt+1
  • ,

✇❤❡r❡ φt = Et

  • ˜

Λt,t+1Rt+1

  • θνs,1S

νs,1−1 b,1,t

− Et

  • ˜

Λt,t+1

  • Rk,1,t+1 − Rt+1

. ✷✻ ✴ ✷✻

slide-46
SLIDE 46

❙♦❧✉t✐♦♥ t♦ ❇❛♥❦❡rs Pr♦❜❧❡♠

❘❡t✉r♥

❚❤✉s✱ ✇❡ ❤❛✈❡ t❤❡ ❢♦❧❧♦✇✐♥❣ ❛r❜✐tr❛❣❡ ❝♦♥❞✐t✐♦♥s✿ Et

  • ˜

Λt,t+1 (Rb,t+1 − Rt+1)

  • = ∆

νbBνb−1

b,t

νs,1Sνs,1−1

b,1,t

Et

  • ˜

Λt,t+1 (Rk,1,t+1 − Rt+1)

  • ,

❛♥❞ Et

  • ˜

Λt,t+1 (Rk,2,t+1 − Rt+1)

  • = ∆s

νs,2Sνs,2−1

b,2,t

νs,1Sνs,1−1

b,1,t

Et

  • ˜

Λt,t+1 (Rk,1,t+1 − Rt+1)

  • .

✷✻ ✴ ✷✻

slide-47
SLIDE 47

▲❡✈❡r❛❣❡ ❘❡str✐❝t✐♦♥

❘❡t✉r♥

❆❝r♦ss ❜❛♥❦s✱ ✇❡ ❤❛✈❡ t❤❡ ❧❡✈❡r❛❣❡ r❡str✐❝t✐♦♥✿ Ntφt ≥ Q1,tSb,1,t νs,1 + ∆sQ2,t Sνs,2

b,2,t

νs,1Sνs,1−1

b,1,t

+ ∆qt Bνb

b,t

νs,1Sνs,1−1

b,1,t

, ✇❤❡r❡ Bb,t ✐s t♦t❛❧ ❜❛♥❦ ❤♦❧❞✐♥❣s ♦❢ ❣♦✈❡r♥♠❡♥t ❜♦♥❞s✳ ❲❡ ❝❛♥ ❛❧s♦ ❞❡r✐✈❡ t❤❡ ❧❛✇ ♦❢ ♠♦t✐♦♥ ❢♦r t♦t❛❧ ♥❡t ✇♦rt❤ ♦❢ ❛❧❧ ❜❛♥❦❡rs ❛s Nt = σ j=2

  • j=1

((Rk,j,t − Rt)Qj,t−1Sb,j,t−1 Nt−1 ) + (Rb,t − Rt)qt−1Bb,t−1 Nt−1

  • Nt−1 + Ne,

✷✻ ✴ ✷✻

slide-48
SLIDE 48

❈❧❡❛r✐♥❣ ❛♥❞ ❊q✉✐❧✐❜r✐✉♠

❘❡t✉r♥

❚❤❡ ❡q✉✐❧✐❜r✐✉♠ ❝♦♥❞✐t✐♦♥s ♦❢ t❤❡ ♠♦❞❡❧ ❛r❡ s✐♠✐❧❛r t♦

  • ❡rt❧❡r ❛♥❞ ❑❛r❛❞✐ ✭✷✵✶✸✮✱ ❡①❝❡♣t ♥♦✇ ✇❡ ❤❛✈❡ t✇♦ ❡q✉❛t✐♦♥s

❢♦r ❝❧❡❛r✐♥❣ ✐♥ ❜♦t❤ t②♣❡s ♦❢ ❝❛♣✐t❛❧ ❛♥❞ ✇❡ ❛❞❥✉st ❢♦r t❤❡ t✇♦ t②♣❡s ♦❢ ❧❛❜♦r ✐♥ t❤❡ s✐♥❣❧❡ ❧❛❜♦r ♠❛r❦❡t ❝❧❡❛r✐♥❣ ❝♦♥❞✐t✐♦♥✳ ❲❡ ❤❛✈❡ t❤❡ r❡s♦✉r❝❡ ❝♦♥str❛✐♥t✿ Yt = Ct + [1 + f( It It−1 )]It +G +

j=2

  • j=1

τs,jQt−1Sg,j,t−1 + τgqt−1Bg,t−1.

✷✻ ✴ ✷✻

slide-49
SLIDE 49

❈❧❡❛r✐♥❣ ❛♥❞ ❊q✉✐❧✐❜r✐✉♠

❘❡t✉r♥

❲❡ t❤❡♥ r❡q✉✐r❡ s✉♣♣❧② ❡q✉❛❧s ❞❡♠❛♥❞ ✐♥ ♦✉r ❞✐✛❡r❡♥t ♠❛r❦❡ts✳ ■♥ ♦✉r ♠❛r❦❡t ❢♦r ❧❛❜♦r✿ ω1(1 − α)ρY ρ

1,tY 1−ρ m,t

L1,t EtuC,t = 1 Pm,t χLφ

t ,

❛♥❞ ω2(1 − α)ρY ρ

2,tY 1−ρ m,t

L2,t EtuC,t = 1 Pm,t χLφ

t ,

✇❤❡r❡ Lt = L1,t + L2,t✳ ■♥ t❤❡ ♠❛r❦❡t ❢♦r ❝❛♣✐t❛❧✱ ✇❡ ❤❛✈❡ K1,t+1 + K2,t+1 = It + (1 − δ)Kt, ✇❤❡r❡ Kt = K1,t + K2,t✳ ❇② ❲❛❧r❛s✬ ▲❛✇ t❤❡ ♠❛r❦❡t ❢♦r r✐s❦❧❡ss s❤♦rt✲t❡r♠ ❞❡❜t ❛❧s♦ ❝❧❡❛rs✳

✷✻ ✴ ✷✻

slide-50
SLIDE 50

❈❧❡❛r✐♥❣ ❛♥❞ ❊q✉✐❧✐❜r✐✉♠

❘❡t✉r♥

❲❡ ❤❛✈❡ s❡❝✉r✐t✐❡s ❝❧❡❛r✐♥❣ Sj,t = Sb,j,t + Sh,j,t + Sg,j,t ✇❤❡r❡ Sj,t ✐s t♦t❛❧ ❤♦❧❞✐♥❣s ♦❢ t②♣❡ j s❡❝✉r✐t✐❡s✳ ❆❧s♦✱ ✇❡ ❤❛✈❡ ❝❧❡❛r✐♥❣ ❢♦r ❣♦✈❡r♥♠❡♥t ❜♦♥❞s✱ ✇❤✐❝❤ ✐♠♣❧✐❡s Bt = Bb,t + Bh,t + Bg,t✳ ❲❡ t❤✉s ❤❛✈❡ t❤❡ ❝♦♥s♦❧✐❞❛t❡❞ ❣♦✈❡r♥♠❡♥t ❜✉❞❣❡t ❝♦♥str❛✐♥t✿ G + (Rbt − 1) ¯ B = Tt +

j=2

  • j=1

(Rk,j,t − Rt − τs,j)Qj,t−1Sg,j,t−1 + (Rb,t − Rt − τb)qt−1Bg,t−1.

✷✻ ✴ ✷✻

slide-51
SLIDE 51

❆✛❡❝t❡❞ ❈♦r♣♦r❛t❡s✱ ◆♦t ❇❛♥❦s

❘❡t✉r♥ ◆♦t❡✿ ❉❡✉ts❝❤❡ ❇❛♥❦ r❡♣♦rt ❆✉❣✉st ✷♥❞✱ ✷✵✶✻✿ ✧❊❈❇ ❈❙PP✿ ❈✉rr❡♥t ❍♦❧❞✐♥❣s✱ Pr✐♠❛r②✲ ▼❛r❦❡t P✐❝❦s ❛♥❞ P❡r❢♦r♠❛♥❝❡✳✧ ✷✻ ✴ ✷✻

slide-52
SLIDE 52

❉✐✛❡r❡♥t✐❛❧ ❊✛❡❝ts ♦♥ ✧❆✧✲❘❛t❡❞ ❇♦♥❞s

❖✈❡r❛❧❧ 80 90 100 110 120 130

Index

Jun-16 Jul-16 Aug-16 Sep-16 Oct-16 Nov-16 Dec-16 Jan-17

Date

purchased non-purchased

❋✐❣✉r❡✿ ❙♣r❡❛❞ P❡r❢♦r♠❛♥❝❡✱ ■❚r❛①① ❊✉r♦♣❡ ◆♦♥✲❋✐♥❛♥❝✐❛❧s ■♥❞❡①✱✶✲❏✉♥❂✶✵✵

◆♦t❡✿ ▼❛r❦✐t✱ ❆✉t❤♦r✬s ❈❛❧❝✉❧❛t✐♦♥s✳ ✧❆✧ ❇♦♥❞s ♦♥❧②✱ ✺✲②❡❛r ❞✉r❛t✐♦♥✳ ❱❡rt✐❝❛❧ ❧✐♥❡ ❛t ❏✉♥❡ ✽t❤✳ ✷✻ ✴ ✷✻

slide-53
SLIDE 53

❙♣r❡❛❞ P❡r❢♦r♠❛♥❝❡✱ ■❚r❛①① ❊✉r♦♣❡ ◆♦♥✲❋✐♥❛♥❝✐❛❧s ■♥❞❡①✱✶✲❏✉♥❂✶✵✵

❘❡t✉r♥

80 90 100 110 120

Index

Jun-16 Jul-16 Aug-16 Sep-16 Oct-16 Nov-16 Dec-16 Jan-17

Date

◆♦t❡✿ ▼❛r❦✐t✱ ❆✉t❤♦r✬s ❈❛❧❝✉❧❛t✐♦♥s✳ ✧❆✧ ❇♦♥❞s ♦♥❧②✱ ✺✲②❡❛r ❞✉r❛t✐♦♥✳ ❱❡rt✐❝❛❧ ❞♦tt❡❞ ❧✐♥❡ ♦♥ ❏✉♥❡ ✽t❤✱ ✷✵✶✻✳ ✷✻ ✴ ✷✻