One year of 'TACO': How the trade has fared since 'liberation day'

9.52%: the S&P 500 jumped 9.52% on April 9, 2025 after Trump paused reciprocal tariffs, epitomizing the so‑called "TACO" (buy‑the‑dip) trade that followed a prior >12% sell‑off tied to tariff announcements. Other notable moves include a 6.3% S&P gain over three sessions after de‑escalation comments on China, a 3.26% jump on May 12 when tariffs were suspended on most goods, and multiple 1–5% moves linked to Greenland threats and Middle East war developments. Retail-driven dip‑buying remains mixed — Interactive Brokers reports traders buying the dip while Vanda Research and JPMorgan found retail activity softer in March — and the article warns the trade is less reliable when resolution requires another party (e.g., Iran), so position sizing and event‑risk hedges remain prudent.

Analysis

Retail "buy-the-dip" reflexes have become a measurable liquidity sink that shortens drawdowns but also compresses realized returns: when presidents or headlines create a selloff, a confident retail cohort and low-cost brokers often provide a mechanically predictable bid within 48–96 hours. That predictable rebound has altered option term structure — front-month skew and IV gap to 2–3 month tenors widen pre-event and then snap back post-event, creating repeated opportunities for short-dated sellers but also concentrated gamma risk for market makers.

Second-order winners are firms that monetize retail activity and option flow (low-commission brokers, listed-deriv pipelines, ETF creation desks) while losers are allocators that systematically short post-news rallies or sell hedges into the first 72 hours of a dip; dealers carrying delta-hedging exposure can be whipsawed and require incremental prime balance sheet capacity on short notice. On a supply-chain axis, policy noise that looks reversible (tariffs, threats) increases dispersion and benefits high-turnover small-cap and specialized exporters/importers for weeks, whereas irreversible shocks (sustained sanctions, kinetic escalation) collapse that trade dramatically.

Key reversal catalysts: (1) a multi-week escalation that removes the credible unilateral off-ramp (e.g., hard Iran response) where other actors must consent; (2) a sustained retail drawdown or regulatory hit to broker economics that reduces the buy-the-dip reflex; (3) realized volatility persistently > implied vol forcing deleveraging by volatility sellers. Time horizons: expect the TACO reflex to operate in days–weeks, structural participation shifts to play out over months.

Key Decisions for Investors

• Buy IBKR directional exposure via a 9–12 month call spread (long LEAP call, short farther OTM call) sized 1–2% of equity risk — captures renewed retail activity post-dip while capping idiosyncratic headline risk. Target payoff >3x premium if retail volumes normalize; stop-loss: 30% of premium if regulatory headlines hit broker fees.
• Pair trade: Long IBKR / Short JPM (equal notional delta-adjusted) over a 3–6 month horizon to isolate retail-flow alpha from institutional bank earnings; expected outcome: IBKR outperforms if retail trading re-accelerates or V-shaped rebounds recur. Risk: broad rally benefits both; cap loss at 5% portfolio notional.
• Sell short-dated SPX put spreads (30-day, 3–5% OTM) after a headline dip when front-month IV > realized IV by >20% — collect premium and rely on the short-term buy-the-dip reflex. Use tight guards: maximum drawdown per trade limited to 3–5% of notional and stop-out if SPX breaches -8% from entry.
• Maintain a 1–2% portfolio tail hedge: buy 3-month VIX calls or deep OTM SPX puts to protect against scenarios where the TACO reflex fails (sustained geopolitical escalation). Cost is insurance-like; payoff is highly asymmetric and justifies the small ongoing premium.