Sophos Alpha

Desk notes, July 2026

The desk notes of Sophos Alpha, an independent quantitative research desk. Daily market notes across many topics, including CTAs, risk parity, vol control and other systematic funds, hedge fund activity and investor sentiment, dealer gamma and liquidity, volatility and tail risk, in equities, rates, currencies and commodities.

July 2026

8 notes

one note

Hedge funds just had their worst day since COVID.

Fundamental L/S -1.3%, Systematic L/S -1.0%, Multi-Strats -1.7%. All three strategies down over 1% on the same day for the first time since March 2020.

Momentum is unwinding fast. YTD gains are shrinking in real time.

Hedge funds just had their worst day since COVID.

one note

We're heading into August, a month with a strong seasonal bias toward volatility.

This vol isn't going anywhere anytime soon, and it's particularly dangerous right now given the thin gamma environment and low liquidity we're sitting in.

We're heading into August, a month with a strong seasonal bias toward volatility.

2 notes

SPX is sitting inside a negative gamma regime.

Bulls need to reclaim the 7500 wall to bring dealers back to buying dips.

Fail, and a break below 7400 opens the door to forced dealer selling, layered with systematic supply, all the way toward 7300.

SPX is sitting inside a negative gamma regime.

CTAs have already breached short-term momentum triggers on the S&P500 and Nasdaq.

Our projection shows systematic notional flipping to net selling even on a flat tape over the week, these models trade price, not fundamentals.

That's why rallies keep feeling heavy.

CTAs have already breached short-term momentum triggers on the S&P500 and Nasdaq.

4 notes

VIX just entered its historically strongest seasonal window.

Systematic strategies size risk based on volatility, when vol rises, they cut exposure.

Combined with an already strong seasonal upswing, this raises real odds of a high-risk environment building.

VIX just entered its historically strongest seasonal window.

Something broke in the last two weeks and almost nobody has said it out loud.

The Nasdaq 100 has been 2x as volatile as the Russell 2000 over the past month.

Every other time this happened, it was 2000-2002.

Something broke in the last two weeks and almost nobody has said it out loud.

Under the hood, breadth tells the real story.

Since late Oct, Russell 2000 is up ~18%, equal-weighted S&P and Nasdaq up ~14%, and the Mag 7 basket is roughly flat. The rally has broadened out well past mega-cap tech.

Under the hood, breadth tells the real story.

S&P 500 is stuck in a loop.

3% range through Q2 earnings, almost the same 2.7% range that held for months before the Iran war knocked it down 9%. Rallied hard, ran into the same wall. Different quarter, same chop.

S&P 500 is stuck in a loop.

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