RSP, the Invesco S&P 500 Equal Weight ETF, heads into the final stretch of July with a notable disconnect: short interest has climbed steadily over the past month while options traders have turned meaningfully less defensive than they were just two weeks ago.
The more striking shift is in options sentiment. Traders are now leaning bullish relative to recent history. The put/call ratio dropped to 0.95 on Tuesday — a full standard deviation below its 20-day mean of 1.13. That's a sharp reversal from early July, when the ratio was running above 1.30 and touching 1.55 in mid-June. For most of the past six weeks, options activity reflected genuine hedging demand. That has clearly unwound. The 52-week range on PCR runs from 0.73 to 3.06, so the current reading sits closer to the bullish end of the spectrum, though not at an extreme.
Short interest tells a different story — and the contrast is worth holding in mind. Shorts have quietly rebuilt over the past month, with RSP's SI % FF climbing 22% to reach 7.5% of free float. That is a meaningful level for any vehicle, especially an ETF often used as a hedging instrument rather than a directional bet. The week-on-week rise is modest at just over 1%, but the monthly trajectory is consistent and upward. Borrow conditions remain relaxed. Cost to borrow has fallen sharply from above 1.3% in late June to just 0.48% now — a 65% drop over the month. Availability is ample at 282%, well above the 55% trough recorded this past year. The combination points to hedging flows rather than a squeeze setup: there is plenty of room to add short exposure without friction.
The borrow market's looseness is itself informative about RSP's structural role. Much of the short interest in an equal-weight S&P 500 ETF reflects professional investors using it to hedge factor or size exposure — shorting RSP against long positions in market-cap-weighted vehicles like SPY is a classic pairs trade to express a mega-cap preference. The 22% monthly rise in short interest likely reflects more of that positioning rather than outright bearish conviction on US equities broadly. That reading is reinforced by the ORTEX short score, which edged up to 51.9 — essentially neutral on a 0-100 scale and consistent with low directional conviction.
Institutional ownership adds some context on who holds the other side. Morgan Stanley leads the holder list at 7.7% of shares, adding roughly 2.8 million shares in Q1. Bank of America added 3 million shares in the same period. Goldman Sachs moved the other way, trimming by 3.6 million shares — the largest single reduction among the top holders. These are broker-dealer and wealth management flows, reinforcing the view that RSP serves primarily as an allocation and hedging vehicle rather than a conviction trade in either direction.
The week itself was quiet on price. RSP slipped 0.3% over the past five sessions, against a 1.3% gain over the past month. No earnings event is on the horizon for this structure. What to watch is whether the PCR continues to ease further toward its 52-week low of 0.73 — a signal that the late-June hedging demand has fully unwound — and whether the steady monthly build in short interest begins to accelerate or stall as the summer positioning window closes.
See the live data behind this article on ORTEX.
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