Vivosa Research
1.3K posts

Vivosa Research
@Vivosa_
Arbitrageur, skeptic. Class of 2009. 1000x or bust many times.









SPX rallied 2.9% today. This marks the first time in 90 trading days that SPX finished at least 2.85% above the prior close. Historically, these outsized upside shocks have tended to precede higher volatility rather than sustained momentum. Looking back to 2006, similar occurrences have generally been followed by choppier price action and weaker risk‑adjusted returns over the subsequent one to two weeks. What stands out in the data: 1) Near term returns skew negative. Average performance is negative across every horizon from 1 to 10 days, indicating poor follow through after the initial surge. 2) Weakness tends to deepen with time. Drawdowns are modest early but deteriorate meaningfully after Day 4, with the Days 6-8 window showing the worst combination of win rate and average return. 3) Volatility increases with a lag. The largest downside outcomes do not occur immediately; historical worst‑cases widen from single digit declines early on to roughly ‑20% or more within two weeks. 4) Upside tails are narrow. Strong positive follow through beyond one week is rare and largely driven by a single historical episode. 5) Even at horizons where outcomes are positive roughly 50% of the time, average returns remain firmly negative, implying losses have historically outweighed gains. Bottom line: Large upside shock days have tended to mark inflection points within downtrends rather than new trend accelerations. Price action becomes choppier and risk skews to the downside. History argues for expecting higher volatility and poorer risk-adjusted returns, not a smooth continuation higher.







$VCX fund that includes 20% of Anthropic, 18% of Databricks, Anduril, and OpenAI is up over 300% in a month. Trading has been halted today! Crazy!




























