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THE TAKE: SYSTEMATIC CTA SQUEEZE & TECH BUYING PROVIDE UPWARD TAPE SUPPORT

Global equities saw strong net institutional accumulation over the past week, driven by long buys outpacing short sales by a 3.9-to-1 ratio. US equities recorded their largest net buying in five weeks (+0.9 SDs on a 1-year lookback), led by short-covering in macro products and aggressive long additions in single stocks. Info Tech and Communication Services remained the most net-bought US sectors for a third consecutive week.

From a systematic perspective, while global CTAs project net selling over a 1-week flat tape (-$10.12B globally), the S&P 500 stands as a notable outlier with $8.5B in baseline systematic buying as prices hold above key short-term pivots. Meanwhile, corporate demand is entering its seasonal low point, with ~64% of S&P 500 companies currently in their buyback blackout window (expected to hit ~85% by week-end).

CTA SYSTEMATIC FLOW MATRIX & SPX PIVOT LEVELS

The CTA systematic trend-following community faces asymmetric flow dynamics depending on market direction over the coming sessions:

  • 1-Week Flow Projections:

    • Flat Tape: Net Sellers of -$10.12B globally (though US equities see +$6.72B in net buying, anchored by SPX baseline demand).

    • Up Tape: Net Buyers of +$5.99B globally (+$8.10B into US equities).

    • Down Tape: Net Sellers of -$45.48B globally (-$6.28B out of US equities).

  • 1-Month Flow Projections:

    • Flat Tape: Net Sellers of -$13.87B globally (+$4.72B into US equities).

    • Up Tape: Net Buyers of +$95.02B globally (+$26.09B into US equities).

    • Down Tape: Net Sellers of -$184.91B globally (-$68.13B out of US equities).

  • Key S&P 500 Systematic Pivot Levels:

    • Short-Term Pivot: 7,643 (SPX trading comfortably above this level triggers systematic buying)

    • Medium-Term Pivot: 7,420

    • Long-Term Pivot: 6,944

PRIME BROKERAGE (PB) & SECTOR FLOWS

  • US Equity Exposure: Net buying accelerated to +0.9 SDs (1-year lookback), driven by short-covering in Macro Products and outright long buying in Single Stocks.

  • TMT Leadership: Info Tech and Communication Services were the most net-bought US sectors for a third straight week, driven entirely by long additions as short activity remained muted.

  • Healthcare Outflows: Hedge funds net sold US Health Care for a fifth consecutive week at the fastest pace in nearly six months (-1.8 SDs 1-year), driven by a mix of long liquidations and short additions.

CORPORATE BUYBACK BLACKOUT TRACKER

  • Current Status: ~64% of S&P 500 constituents are currently in their earnings quiet period.

  • Week-End Estimate: ~85% of the index will be locked in blackout by Friday, September 25.

  • Desk Activity: Corporate buyback desk execution is transitioning toward structured 10b5-1 plans to maintain baseline execution until earnings season blackout restrictions roll off in October.