SPY daily moves and drawdown, February to April 2020

Answered against 22 years of US equities and 12 years of US options data and published with the query that produced it. This result is stored as of 2026-08-09, from Reg T Margin vs Portfolio Margin Explained.

Rows × columns

45 × 4

Period covered

2020-02-11 to 2020-04-15

Computed

2026-08-09

Completeness

No missing values

Source

US exchange, SIP and OPRA market data

Licence

Strasmore terms · free, no signup

Formats

JSON · CSV · the SQL below

What each column holds

Computed from Strasmore's warehouse of US exchange, SIP and OPRA market data. Equity prices are delayed; options greeks and implied volatility are end-of-day. This result is stored, not recomputed on load — it is exactly the numbers that were returned on 2026-08-09, and the query below is what returned them.

SELECT
    session_date,
    daily_move_pct,
    drawdown_pct,
    round(min(drawdown_pct) OVER (ORDER BY session_date ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW), 2) AS deepest_drawdown_pct
FROM
(
    SELECT
        toString(date) AS session_date,
        round((toFloat64(close) / lagInFrame(toFloat64(close), 1) OVER (ORDER BY date ROWS BETWEEN 1 PRECEDING AND CURRENT ROW) - 1) * 100, 2) AS daily_move_pct,
        round((toFloat64(close) / max(toFloat64(close)) OVER (ORDER BY date ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) - 1) * 100, 2) AS drawdown_pct
    FROM global_markets.stocks_daily_aggs
    WHERE ticker = 'SPY'
      AND date >= '2020-02-10'
      AND date <  '2020-04-16'
)
WHERE session_date > '2020-02-10'
ORDER BY session_date