Nasdaq-100 Removals — the year after leaving the index

How stocks dropped from the NDX behaved over their first 252 trading days out. Baseline = close of the first day out. Read top to bottom.

Distributions

The shape of each outcome across all removed stocks; the dashed line marks the median.

Timing — do troughs cluster early?

If forced index-fund selling drives prices down right after removal, low points should bunch at small x. A spread across the year argues against pure price-pressure.

Each dot = one stock: trading days until its lowest close (x) vs trough depth % (y). Hover for the ticker.

Same for peaks: days until the highest close (x) vs peak height % (y).

By removal year

Median 1-year return for each removal cohort (bar) with the number of stocks (n) per year. Watch for a few macro years (2008, 2022) driving the extremes.

Every stock

Hide truncated rows Years –

← swipe the table sideways to see all columns →

How to read this — and what it hides

Survivorship bias is the big one. This file only contains removed stocks that still had price data. Tickers that were later delisted, went bankrupt, or were acquired get dropped by the data source — and those were disproportionately the worst post-removal performers. So the true numbers are lower than everything shown here.
Truncated windows. A stock acquired or delisted during its post-removal year has fewer than a full 252 trading days; its "1-year return" isn't a real year. The year-based stats (1-yr return, % positive, % beat QQQ) use full-year rows only; you can hide truncated rows in the table to see the rest.
Excess vs QQQ is the fairer measure. A raw return mostly reflects whether the market happened to be up or down over that particular year. Return relative to QQQ over the identical window strips out the regime, so it's the more meaningful comparison across a 2008 removal vs a 2021 one.

Generated from results_per_stock.csv · charts via Chart.js (CDN)
Price data via Yahoo Finance (yfinance). “Nasdaq-100” is a trademark of Nasdaq, Inc.; “QQQ” (Invesco QQQ Trust) is a product of Invesco — used for identification only. Built by Hesanka with Claude. © 2026.