book_speed
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 2026-09-24, from latency-models-in-hft-backtests.
| symbol | replaced_within_5ms_pct | replaced_within_50ms_pct |
|---|---|---|
| SPY | 81.2 | 95.8 |
| AAPL | 77.4 | 88.1 |
| NVDA | 76.6 | 93.4 |
| KO | 72.8 | 83.9 |
| MSFT | 71.4 | 81.9 |
- Rows × columns
- 5 × 3
- Computed
- Completeness
- No missing values
- Source
- US exchange, SIP and OPRA market data
- Licence
- Strasmore terms · free, no signup
What each column holds
| Column | Type | Range | Notes |
|---|---|---|---|
symbol |
text | 5 distinct values (AAPL, KO, MSFT…) | |
replaced_within_5ms_pct |
number | 71.4 to 81.2 | percent |
replaced_within_50ms_pct |
number | 81.9 to 95.8 | percent |
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 , and the query below is what returned them.
Run it yourself
This is the exact query behind the result above. Change a ticker, a date or a column and run it against the warehouse — no account, no key. The no-signup tier is smaller than the one this page was computed on; a query that reaches past it comes back saying which plan runs it.
WITH gaps AS
(
SELECT
ticker,
dateDiff('millisecond',
lagInFrame(sip_timestamp) OVER (PARTITION BY ticker ORDER BY sip_timestamp, sequence_number
ROWS BETWEEN 1 PRECEDING AND CURRENT ROW),
sip_timestamp) AS gap_ms
FROM global_markets.cache_stocks_quotes
WHERE ticker IN ('AAPL', 'MSFT', 'NVDA', 'SPY', 'KO')
AND sip_timestamp >= '2026-09-15 14:00:00'
AND sip_timestamp < '2026-09-15 15:00:00'
AND bid_price > 0
AND ask_price > bid_price
)
SELECT
ticker AS symbol,
round(100 * countIf(gap_ms BETWEEN 0 AND 5) / count(), 1) AS replaced_within_5ms_pct,
round(100 * countIf(gap_ms BETWEEN 0 AND 50) / count(), 1) AS replaced_within_50ms_pct
FROM gaps
GROUP BY ticker
ORDER BY replaced_within_5ms_pct DESC
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