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John Comiskey's avatar

Nice post to end the year with. 2023 should prove to be damn interesting.

A couple of points:

1. Regarding footnote 5. Its actually the principal from prepaying mortgages that makes up the majority of monthly MBS payments to the FED. The principal portion of regular mtge payments is ~5b/mnth on the FEDs 2.6T MBS portfolio, thus prepayments accounted for ~12b of the FEDs MBS reduction this month. Prepayments used to dominate much more before mtge prepayments speeds collapsed. Since the 5b/mnth for regular principal payments is close to static, when the FED was receiving 40b/mnth in MBS payments (early last spring) the split was more 5/35. Sorry for the nitpick but thought you and your readers might find the nuance interesting.

2. Treasury's payments to the fed to payoff UST maturities each month is debt ceiling neutral I believe since regardless of whether its the FED (reinvestment above the QT cap) or rest of market (up to the 60b cap) that funds the rollover, from a debt ceiling perspective its maturing debt so Treasury can reissue the same amount of debt without impacting the debt ceiling number. So I think its really the deficit spending (including servicing costs for existing debt) that drives the TGA drawdown once the debt ceiling is hit and the only new debt Treasury can issue is rollover of maturing debt (in amounts anyways composition of the new vs. maturing debt may change e.g. Bills -> coupons to keep the coupon issuance schedule)

3. One thing to account for on when the TGA will exhaust in the absence of a ceiling hike is tax receipts. My general understanding is they are heavier through April/May which would offset pressure on the TGA drawdown for a bit and may explain why many estiamtes dont anticipate exhaustion until Q3

4. My last point is more a question. What is the causal relationship (if any) between base money "liquidity" and equity prices/S&P level. Defining base money "liquidity" as more or less the level of bank reserves (total FED B/S liabilities - (TGA + RRP) ) given that currency is pretty constant. I recognize the clear correlation between the two over the past 2 years but I can think of no logical causation. I would love to hear any thoughts you have on that causation or lack thereof. Perhaps an article topic for sometime in 2023.

Thank you TLBS for all you have shared with us this past year! It is fabulous content and very much appreciated.

Happy New Year,

John

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Matias's avatar

Great article as always, very insightful about the mechanics between the treasury the fed and the markets.

Wish you a great 2023!

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