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SPY / QQQ / NVDA / TSLA / MU / SNDK / AVGO: RTH median quoted spread in basis points

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 2026-07-26, from Market Recap: July 8, 2026, The Day in Numbers.

as of ranking 7×2read in context →
SPY / QQQ / NVDA / TSLA / MU / SNDK / AVGO: RTH median quoted spread in basis points — 7 rows by 2 columns, computed from US exchange, SIP and OPRA data.
tickermedian_spread_bps
SPY0.27
QQQ0.71
NVDA1.52
TSLA2.28
AVGO3.63
MU5.66
SNDK12.21
Rows × columns
7 × 2
Computed
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

Column definitions for SPY / QQQ / NVDA / TSLA / MU / SNDK / AVGO: RTH median quoted spread in basis points, derived from the stored result.
ColumnTypeRangeNotes
ticker text 7 distinct values (AVGO, MU, NVDA…)
median_spread_bps number 0.27 to 12.21

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.

the exact SQL behind every number 
SELECT
    ticker,
    round(quantileExact(0.5)((toFloat64(ask_price) - toFloat64(bid_price)) / ((toFloat64(ask_price) + toFloat64(bid_price)) / 2) * 10000), 2) AS median_spread_bps
FROM global_markets.cache_stocks_quotes
WHERE ticker IN ('SPY', 'QQQ', 'NVDA', 'TSLA', 'MU', 'SNDK', 'AVGO')
  AND sip_timestamp >= '2026-07-08 13:30:00' AND sip_timestamp < '2026-07-08 20:00:00'
  AND bid_price > 0 AND ask_price > 0 AND ask_price > bid_price
GROUP BY ticker
ORDER BY median_spread_bps ASC

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