Citadel Securities: Equal-Weight S&P Outperforms Cap-Weighted, Rotation Still in Early Stages
Alina Collins
Citadel Securities' strategy team flags that the equal-weight S&P 500 ETF (RSP) has outperformed cap-weighted SPY by roughly 3 percentage points this month, signaling leadership is broadening beyond mega-cap tech — yet record put-option volumes show the market is hedging hard even as it rotates.
Equal-weight beating cap-weight — what does that actually mean?
The RSP/SPY relative-performance ratio jumped from the 4th percentile to the 40th percentile over the past year. This means → the rally is no longer carried almost entirely by the largest stocks; mid- and small-caps are catching up.
In plain terms = the S&P 500's gains used to rest on a handful of mega-cap tech names. Now money is spreading to a wider set of companies.
Stripping out AI-linked constituents, the S&P 500's relative performance also rebounded from a one-year low on June 1 to the 16th percentile — further proof the rally is broadening.
The index fell — so why call the breadth reading positive?
The S&P 500 closed lower on Tuesday, yet 370 of its constituents finished up — the strongest breadth reading since late April.
This means → the decline was driven by a few mega-cap names dragging the index; most stocks actually rose, placing breadth at the 89th percentile for the past year.
In plain terms = the headline said "down," but beneath the surface most companies gained. Participation is widening.
Money is rotating — so why are put volumes hitting records?
Tuesday saw 11.17 million SPY put contracts and 7.41 million QQQ put contracts traded. QQQ volume was 2.6× its one-year daily average and 15% above the all-time record set just two sessions earlier.
This reflects a market that is not blindly bullish: funds are shifting money out of tech into other sectors while simultaneously buying downside protection.
In plain terms = rotation is happening, but everyone fears a sudden reversal — so "insurance premiums" are surging in lockstep.
Why are AI spending expectations softening?
The Silicon Valley Data LLM Spending Index — a gauge tracking investment in large-language-model infrastructure — has recently declined, potentially signaling a shift toward cheaper, more efficient AI models.
Flight wrote that AI adoption "may prove more selective and more cost-conscious than the market's most optimistic projections."
This means → even a modest downward revision in AI spending expectations could trigger position adjustments and deleveraging in the crowded tech and semiconductor trade.
What events could make or break this rotation?
Flight remains bullish on cyclical and rate-sensitive sectors, while flagging large-cap tech and semiconductors as the most concentrated source of downside risk.
Three events land in quick succession: Friday's closely watched IPO, next week's Fed FOMC meeting, and the June triple-witching expiry — the day stock options, index options, and index futures all expire simultaneously.
In plain terms = the leadership shift is already happening "below the waterline." These events will determine whether rotation gains further momentum or gets interrupted.
Content is for reference only, not financial advice.