Narrative Rotation / Rolling Bubbles

Tracks how capital rotates between crowded narratives before broad macro data catches up.

October 10 update: held, with the first sign of rotation out of the most crowded trade. Chipmakers fell 4.46% on the week while the S&P 500 fund rose 1.15%, reversing the prior week's 4.18% chip gain; the S&P 500 fund had closed a one-year-high $779.09 on October 6 and the Nasdaq-100 fund one-year highs on October 5 and 6. Crowding sweeps on October 8 and 9 still named long semiconductors as the most one-sided consensus trade, with short long-dated Treasuries second. Next check: chipmakers recovering the week's loss is the flip condition that cancels the rotation read; a second week of chips lagging the broad market would confirm it. October 7 update: held, with leadership still narrow and still ignoring the rate shock. Chipmakers gained 4.18% across September 27–October 3 while small companies gained 0.42%, and the 30-year closing at a one-year high left the crowded chip leg exposed on the same facts the row has tracked since mid-September. Price then extended rather than handing off: the Nasdaq-100 fund printed one-year-high closes on October 2, 5 and 6 (to $759.66) and the S&P 500 fund a one-year-high $779.09 on October 6. The latest crowding sweep names long-only money packed into a narrow group of AI hardware and power stocks as one of the most one-sided bets, alongside leveraged funds short Treasury futures in the basis trade. Next check: small companies outperform chipmakers for a full week (the weekly flip condition); a crowded-leg drawdown that coincides with the 10-year breaking above 5.35% would be the rolling-bubble rotation this row is waiting for. September 30 update: held as the crowded chip bet kept climbing against the yield shock while the broad risk sleeve did not. Chipmakers gained 4.24% on the week while small company stocks fell 1.50%, even as the 2-year rose 20bp to a one-year-high 4.87% and, by September 29, the 10-year and 30-year printed fresh one-year highs at 5.26% and 5.59% with Russell 2000 down 2.85% in five sessions. Rising yields remain the named threat to the most crowded corner, but that corner has not yet handed off, the divergence itself is the rotation signal. Next check: whether chipmakers keep the weekly gain through the September 30 Core PCE print if short-term yields climb again; a chip fade with small caps still weak would mark the crowded corner finally repricing, while another week of chips up and everything else down keeps the held raise. September 16 update: the crowding leg fired while the handoff leg paused. Small caps fell 3.23% in five sessions to $285.14, bigger than all but 20 of the last 120 such moves, with Europe -2.74%, gold miners -5.99%, and chipmakers -5.9% in the same window, and managers named chipmakers the most crowded bet and rising bond yields the biggest threat to it, the first time in this run that the crowded trade and the thing threatening it are the same two facts. The cause is identifiable rather than flow-led: the 2-year rose 28bp to a one-year-high 4.65% into a near-certain September 16 hike, so small caps and chipmakers did travel together, but downward and on data. That is rolling-bubble risk arriving rather than a fifth handoff. Next check: the S&P 500 holding above 745 through September 23; leadership broadening back across the index once the rates repricing settles invalidates, another single-cell handoff with small caps worst keeps it flow-led. September 12 update: the cell moved again and the invalidation stayed unmet. Leadership handed back out of semiconductors after a single week in front, small companies fell hardest, and no macro release explains the switch, the fourth handoff inside the same capital neighbourhood and exactly the condition this row named as keeping it flow-led rather than data-led. Credit again declined to object, with high yield at 270bp and financial conditions unchanged at -0.56, but the price of a shock moved for the first time in this run: the VIX rose 3.22 points in five sessions to 17.54, bigger than all but 24 of the last 120 such moves, off a 14.03 one-year low. Next check: a broad, data-led move in which small caps and chipmakers travel together invalidates the rotation read; a fifth handoff, or the VIX holding above 17 while leadership keeps rotating, keeps it flow-led and starts to price it. September 5 update: breadth stayed narrow and the cell moved again. Semiconductors led at +2.28% and emerging markets at +2.10% against SPY +0.37% and IWM +0.31%, so small caps kept lagging through the September 4 employment report, the standing next check settled against broadening, and leadership handed back from software to semiconductors inside a single week, the third handoff inside the same capital neighbourhood without a macro release explaining it. Nothing objected: the VIX fell 0.71 to 14.53 and high yield sat at 265bp, both near one-year lows. Next check: an equal-weight or small-cap leg outpacing the index for two consecutive weeks invalidates the rotation read; a fourth handoff, or semis giving the 2.28% straight back, keeps it flow-led. September 2 update: the reinstated candidate got its second window and breadth narrowed again. Small caps fell 2.06% while the Nasdaq rose 0.78%, with the gain concentrated in software rather than broadening, and semiconductors fell a further 1.85%, so the semis-to-software handoff held rather than reversing. No stress channel objected, high yield tightened to 263bp and the VIX sat at 15.44, and no macro release explained the split, which keeps this flow-led rather than data-led. Next check: whether small caps stop lagging the Nasdaq in the week after the September 4 employment report, or a third cell ignites in the same capital neighbourhood; leadership broadening back across the index invalidates. August 29 update: the row was retired on August 8 with an explicit condition that it returns if breadth narrows again, and breadth narrowed. Small caps fell 1.27% against the Nasdaq +0.95%, leadership handed from semiconductors to software inside a single session with software singles up 15% and NVDA and IGV up 7%, and the handoff was flow-driven rather than data-led, fund semiconductor exposure at a one-year low, high yield tightening 7bp to 263, and the VIX down 1.47 to 14.43, so no macro data explained the move. Reinstated as a candidate only. Next check: whether the software leg holds its gain for three sessions and a third cell ignites in the same capital neighbourhood, versus leadership broadening back across the index. July 17 update: strong foundry results and positive second-quarter production failed to protect semiconductor prices, moving the rolling-bubble lens from late crowding to live de-grossing. Keep physical AI buildout separate from public-equity flows unless credit, orders, supplier guidance, and earnings conversion weaken together.