QuantStreet Capital
Harry MamayskyInvesting and market insights. Quantitatively driven asset allocation.
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 58 | Founded | 4 years ago | Last Issue | 7 days ago |
| Active | |||||
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quantstreet.substack.comLatest Issues
QuantStreet October 2026 Letter: Interest Rate Worries
Societal angst about AI continues to grow. Whether it’s concern about misalignment or potentially misdirected investment, the AI-may-be-bad narrative is gaining traction. In stark contrast, the AI trade in financial markets was alive and we...
QuantStreet September 2026 Letter: Interest Rate Worries
August was a good month in financial markets, with the S&P 500 up around 2.7%. The market leaders came from the commodity complex, with gold and bitcoin (not sure how this should be classified) being the two top performers. High up as well...
Investing After a Liquidity Event
Introduction
Those who recently experienced a liquidity event have to make several important decisions:
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What’s an appropriate risk target?
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How do you construct a portfolio consistent with the risk target?
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What role do...
QuantStreet August 2026 Letter: Sector Rotation Continues
July 2026 was a flattish month for markets. The S&P 500 index was down slightly. Value did well, while momentum did poorly. Smallcaps, midcaps, and emerging markets, all of which have been the year’s best performers, had a bad month. Commod...
Monthly Mean Reversion or Trend
For the most part, whether an asset class does well or poorly in month t has little to say about how well it will do in month t+1. (The story may or may not be different for individual stocks, but here our focus is on asset-level returns.)...
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Authors
The writers behind this newsletter.
Professor at Columbia Business School. Partner at QuantStreet Capital. https://t.co/skakiHWTbL
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