STRASMORE/EXPLORE 3,293 QUERIES 22Y EQUITIES · 12Y OPTIONS

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What Is Triple Witching? Volume & Volatility
SPY's expiring June 18, 2026 series: contracts traded by strike, and each strike's distance from the closing priceranking · 2026-09-28 · 12×4Preview: 12 ranked values, largest first. Contract volume by expiration date: all US options traded June 1-18, 2026, top eight expiriesranking · 2026-09-28 · 8×2Preview: 8 ranked values, largest first. Closing auction prints of ten large S&P 500 members: dollar volume on witching day vs. a typical June 2026 sessionscalar · 2026-09-28 · 1×549.6
What Is a Liquidity Sweep in Trading?
SPY 2025: the ten widest pokes above the prior day's high that closed back below itseries · 2026-09-28 · 10×7Preview: a 10-point series, ending lower. Inside the widest 2025 SPY sweep day: fifteen-minute high, low and volumeseries · 2026-09-28 · 26×4Preview: a 16-point series, ending lower. Volume in the fifteen minutes that printed the high, beside the session's median and busiest slicesranking · 2026-09-28 · 3×2Preview: 3 ranked values, smallest first. SPY: share of sessions that swept the prior day's high or low, by yearranking · 2026-09-28 · 5×3Preview: 5 ranked values, smallest first. How often a session pokes through the prior day's high or low and closes back inside, 2021 to 2025table · 2026-09-28 · 7×6
What Does Cross Mean in Trading? 4 Meanings
AAPL quote states in the first five minutes of June 18, 2026: normal, locked, crossedranking · 2026-09-28 · 3×4Preview: 3 ranked values, largest first. AAPL average volume by clock minute, June 2026: the two cross minutes vs ordinary onesseries · 2026-09-28 · 7×4Preview: a 7-point series, roughly flat. Equities condition codes that mark a cross, an opening, a closing, or an official printtable · 2026-09-28 · 13×5
What Are Tokenized Stocks? Rights & Settlement
Apple share volume by session segment, Aug 17 to Sep 11, 2026ranking · 2026-09-28 · 5×3Preview: 5 ranked values, largest first. Share of volume printed outside the regular session, five names, same four weeksranking · 2026-09-28 · 5×3Preview: 5 ranked values, largest first. Apple dividends: ex-date, record date and pay date, 2024 to August 2026series · 2026-09-28 · 11×7Preview: a 11-point series, ending lower.
TWAP vs VWAP vs POV Orders Explained
SPY intraday volume curve vs a flat TWAP schedule, June to August 2026series · 2026-09-28 · 13×4Preview: a 13-point series, roughly flat. How far volume falls from the open to the 12:30 half hour, five liquid namestable · 2026-09-28 · 5×6 What a 10% participation order on AAPL could fill each half hour, August 12, 2026series · 2026-09-28 · 13×4Preview: a 13-point series, ending higher. SPY: median, lowest and highest share of the day's volume per half hour, June to August 2026series · 2026-09-28 · 13×4Preview: a 13-point series, ending higher.
Triple Witching 2026 Dates and Volume Data
SPY on witching sessions vs. the same month's other sessions: intraday range and net move (% of the open)series · 2026-09-28 · 8×4Preview: a 8-point series, roughly flat. Every quarterly witching session since September 2024: market-wide regular-hours dollar volume before the closing auctions, vs. the month's other sessionsseries · 2026-09-28 · 8×4Preview: a 8-point series, ending lower. Dollar volume by half hour, closing auction prints in the final bucket: witching Thursday (Jun 18, 2026) vs. the ordinary Friday before it (Jun 12)series · 2026-09-28 · 13×3Preview: a 13-point series, ending higher.
Tradegate vs Xetra: Hours and Prices
Median quoted spread by clock hour, one symbol, one sessionseries · 2026-09-28 · 16×4Preview: a 16-point series, roughly flat. SPY volume in ten-minute buckets across one full trading dayseries · 2026-09-28 · 96×2Preview: a 16-point series, roughly flat. Evening volume share and the gap to the official closeranking · 2026-09-28 · 6×3Preview: 6 ranked values, largest first. Where one session's volume actually printed, by phaseseries · 2026-09-28 · 5×3Preview: a 5-point series, roughly flat.
Time in Force Explained: Day, GTC, IOC, FOK
SPY share volume by ET clock hour, June 2026series · 2026-09-28 · 16×2Preview: a 16-point series, roughly flat. Print sizes across five names, 10:00 to 11:00 a.m. ET on 2026-06-10ranking · 2026-09-28 · 5×3Preview: 5 ranked values, largest first. US stock splits per month, forward and reverseseries · 2026-09-28 · 12×3Preview: a 12-point series, ending higher. SPY volume per minute into the close, then the closing cross, June 2026 session averageseries · 2026-09-28 · 16×2Preview: a 16-point series, ending higher.
NYSE Imbalance Messages: How to Read Them
Gap between the 3:50 p.m. price and the official close, July 2026 sessionsranking · 2026-09-28 · 6×3Preview: 6 ranked values, largest first. How often the close finished above the 3:50 p.m. price, July 2026 sessionsranking · 2026-09-28 · 6×3Preview: 6 ranked values, largest first. Coca-Cola average volume per five-minute bucket from 3:00 p.m. ET, then the closing auction print, July 2026series · 2026-09-28 · 13×2Preview: a 13-point series, ending higher. Share of regular-session volume in the opening and closing auction prints, July 2026ranking · 2026-09-28 · 6×3Preview: 6 ranked values, largest first.
NYSE Closing Auction Explained: How It Works
KO second by second: the last ten seconds of continuous trading and the closing auction (Aug 19, 2026)series · 2026-09-28 · 19×5Preview: a 16-point series, ending higher. The receipt: KO's last continuous trade, its closing auction print, and the daily bar's close (Aug 19, 2026)scalar · 2026-09-28 · 1×1290.38 Trade condition codes that describe a close, from the consolidated-tape dictionarytable · 2026-09-28 · 5×3 The closing print as a share of the day's volume, eight NYSE-listed names (Aug 19, 2026)series · 2026-09-28 · 8×4Preview: a 8-point series, ending lower.
NVDA: Sit-Out, Then Surge, Week of July 6
Print-size anatomy and quote census: NVDA, full weekscalar · 2026-09-28 · 1×512.17 NVDA median quoted spread by session, regular hours (bps of midpoint)series · 2026-09-28 · 5×3Preview: a 5-point series, ending higher. FINRA daily short volume, NVDA: with the file-completeness caveatranking · 2026-09-28 · 5×3Preview: 5 ranked values, smallest first. NVDA by session: close, change, shares, dollarsseries · 2026-09-28 · 5×5Preview: a 5-point series, ending higher. NVDA, week of July 6, 2026: open to close, extremes with receipts, volumescalar · 2026-09-28 · 1×14194.51 Rank receipt: NVDA's weekly dollar volume against every other ticker, plus the Friday-only rankscalar · 2026-09-28 · 1×73 NVDA position check as of Friday's close: trailing-year extremes and moving averagesscalar · 2026-09-28 · 1×12210.96 NVDA options, full week: totals, put-call vs trailing baseline, strikes and expiries decodedscalar · 2026-09-28 · 1×1117.28 News-feed attention: articles tagged NVDA during the week, decodedscalar · 2026-09-28 · 1×1186 The week's heaviest tickers by regular-hours dollar volumeranking · 2026-09-28 · 6×2Preview: 6 ranked values, largest first. NVDA vs the chip complex: close-over-close % change by sessionseries · 2026-09-28 · 5×6Preview: a 5-point series, ending lower. NVDA weekly returns, trailing ~26 weeks (open-to-close per week): where this week rankstable · 2026-09-28 · 27×3
Nasdaq Opening Cross Explained: 4 a.m. to 9:30
Share of regular-session volume in the opening minute, the 12:30 minute, and the closing cross, August 2026ranking · 2026-09-28 · 5×4Preview: 5 ranked values, largest first. Trade condition codes whose names mark an opening or reopening printranking · 2026-09-28 · 14×3Preview: 14 ranked values, smallest first. AAPL: opening-minute and closing-cross share of regular-session volume, by sessionseries · 2026-09-28 · 21×4Preview: a 16-point series, ending higher.
Micro E-mini vs E-mini Futures: Specs & Cost
SPY volume on each quarterly expiry Friday against its prior 20 sessionsseries · 2026-09-28 · 13×3Preview: a 13-point series, ending higher. Average daily range by index family, trailing six monthsranking · 2026-09-28 · 4×3Preview: 4 ranked values, largest first.
Market Recap: July 9, 2026, The Day in Numbers
Shares per 30-minute ET bucket, regular hours, closing auction prints in the final bucket, with % of the day's biggest bucketseries · 2026-09-28 · 13×3Preview: a 13-point series, ending higher.
Market Recap: July 7, 2026, The Day in Numbers
Shares traded per 30-minute bucket, regular hours, closing auction prints in the final bucket (billions)series · 2026-09-28 · 13×3Preview: a 13-point series, ending higher.
Market Recap: July 2, 2026, The Day in Numbers
Shares traded per 30-minute bucket, regular hours, closing auction prints in the final bucket (billions)series · 2026-09-28 · 13×3Preview: a 13-point series, ending higher.
Market Recap: June 30, 2026, The Day in Numbers
Shares traded per 30-minute bucket, regular hours, closing auction prints in the final bucket (billions)series · 2026-09-28 · 13×3Preview: a 13-point series, ending higher.
Market Recap: June 29, 2026, The Day in Numbers
Shares traded per 30-minute bucket, regular hours, closing auction prints in the final bucket (billions)series · 2026-09-28 · 13×4Preview: a 13-point series, ending higher.
Market Data Skills for AI Agents
Trading sessions per month: SPY bars, July 2025 through June 2026series · 2026-09-28 · 12×4Preview: a 12-point series, roughly flat. Where the volume sits: share of June 2026 volume by half hour, New York timeseries · 2026-09-28 · 32×3Preview: a 16-point series, roughly flat. One company, two tickers: share class volume split, June 2026ranking · 2026-09-28 · 6×4Preview: 6 ranked values, largest first. Minute bars per session: nine widely held names, June 2026series · 2026-09-28 · 9×4Preview: a 9-point series, ending lower.
Leveraged ETF Rebalancing Into the Close
The twelve biggest 2025 index moves and the reset trade each one requiresseries · 2026-09-28 · 12×6Preview: a 12-point series, ending lower. The final half hour and the closing cross on 2025's largest-move session, against a typical 2025 sessionseries · 2026-09-28 · 31×3Preview: a 16-point series, ending higher. 2025 sessions by index move size, and the 3x reset each bucket impliesranking · 2026-09-28 · 5×3Preview: 5 ranked values, largest first. Share of session volume printed in the closing cross, July to December 2025ranking · 2026-09-28 · 8×4Preview: 8 ranked values, largest first.
Is Cross Trading Legal? Rules by Venue
AAPL prints by trade size, June 10, 2026ranking · 2026-09-28 · 4×4Preview: 4 ranked values, largest first. Trade condition codes that carry the word crossranking · 2026-09-28 · 6×4Preview: 6 ranked values, smallest first. SPY: share of daily volume in the opening and closing cross prints, June 2026series · 2026-09-28 · 21×4Preview: a 16-point series, ending lower. Opening and closing cross prints as a share of the day's volume, June 10, 2026ranking · 2026-09-28 · 5×3Preview: 5 ranked values, largest first.
How Mutual Fund NAV Is Calculated: Example
Share of SPY's session volume by half hour, June 2026 averageseries · 2026-09-28 · 13×2Preview: a 13-point series, ending higher. Average move from the 11:30 a.m. ET European close to the 4:00 p.m. close, Q2 2026ranking · 2026-09-28 · 5×3Preview: 5 ranked values, largest first. One session's price path, SPY every 15 minutes on June 17, 2026series · 2026-09-28 · 27×2Preview: a 16-point series, ending lower. Distance from the 10:00 a.m. ET price to the close, SPY, by monthseries · 2026-09-28 · 12×4Preview: a 12-point series, roughly flat.
How Exchange Speed Bumps Work
Average spacing between national best quote updates, one fixed hourranking · 2026-09-28 · 5×3Preview: 5 ranked values, largest first. Quote messages per minute against distinct best-bid prices (NVDA)series · 2026-09-28 · 60×3Preview: a 16-point series, ending lower. Which venues held the best bid, half-hour slice (AAPL)ranking · 2026-09-28 · 16×4Preview: 16 ranked values, largest first.
March 24, 2020: The Day the Market Turned
Did it hold? The retest that never came, and two recovery clocksscalar · 2026-09-28 · 1×12338.31 March 24, 2020 ranked against every SPY session on the minute tapescalar · 2026-09-28 · 1×115,613 SPY by half-hour: March 24, 2020 regular session, closing cross print in the final half hourseries · 2026-09-28 · 13×4Preview: a 13-point series, ending higher. SPY on March 24, 2020: the turn, receiptedscalar · 2026-09-28 · 1×11222.51 SPY daily close, drawdown, and the 10-year yield: Feb 19 to Mar 23, 2020series · 2026-09-28 · 24×4Preview: a 16-point series, ending lower. March 24, 2020 across index and sector ETFs: everything up, cyclicals firstranking · 2026-09-28 · 12×4Preview: 12 ranked values, smallest first. SPY closes, March 23-26, 2020: the three-day burstseries · 2026-09-28 · 4×4Preview: a 4-point series, ending lower.
COVID Crash 2020: Four Halts, Peak to Trough
10-year and 3-month Treasury yields through the crash, daily closesseries · 2026-09-28 · 31×3Preview: a 16-point series, ending lower. SPY options: puts vs calls traded, March 2–13, 2020 (millions of contracts)series · 2026-09-28 · 10×4Preview: a 10-point series, roughly flat. March 9 and full-crash moves: cruise, airline, energy, bank, tech, staples vs SPYranking · 2026-09-28 · 7×3Preview: 7 ranked values, smallest first. SPY by half-hour: March 9, 2020 regular session, closing cross print in the final half hourseries · 2026-09-28 · 13×4Preview: a 13-point series, ending higher. SPY on March 9, 2020: the circuit-breaker session, receiptedscalar · 2026-09-28 · 1×11297.42 The COVID crash, peak to trough to recovery: SPY daily closes, one rowscalar · 2026-09-28 · 1×11338.31 The four circuit-breaker sessions of March 2020: SPY close, change, volumeseries · 2026-09-28 · 4×4Preview: a 4-point series, ending higher.
Compressing Market Data: zstd vs gzip
Distinct prices per name, and how often each one repeatsranking · 2026-09-28 · 5×3Preview: 5 ranked values, smallest first. One session of trade prints, five household namesranking · 2026-09-28 · 5×3Preview: 5 ranked values, largest first. Uncompressed footprint of five names as retention growsranking · 2026-09-28 · 6×2Preview: 6 ranked values, smallest first. AAPL trade counts and distinct prices per quarter hourseries · 2026-09-28 · 64×3Preview: a 16-point series, roughly flat.
Can You Trade US Stocks 24 Hours a Day?
Shares printed by New York clock hour: AAPL, MSFT, NVDA, SPY and TSLA, week of July 13, 2026series · 2026-09-28 · 16×3Preview: a 16-point series, roughly flat. AAPL quoted spread by New York clock hour, July 14, 2026: median and 90th percentile minuteranking · 2026-09-28 · 7×4Preview: 7 ranked values, smallest first. Share of weekly volume by session window: seven household names, week of July 13, 2026ranking · 2026-09-28 · 7×4Preview: 7 ranked values, largest first. NVDA on July 14, 2026: price and volume in 30 minute buckets, 4:00 a.m. to 8:00 p.m. ETseries · 2026-09-28 · 32×3Preview: a 16-point series, roughly flat.
ZM at-the-money IV by days to expiry, most recent week of data

ZM at-the-money IV by days to expiry, most recent week of data

most recentas of ranking 5×4read in context →
ZM at-the-money IV by days to expiry, most recent week of data — 5 rows by 4 columns, computed from US exchange, SIP and OPRA data.
dte_bucketatm_iv_pctcontract_countas_of
0 to 10 days53.8162Oct 22, 2026
11 to 30 days42.9149Oct 22, 2026
31 to 60 days44.783Oct 22, 2026
61 to 120 days4547Oct 22, 2026
over 120 days44.771Oct 22, 2026
the exact SQL behind every number
SELECT
    multiIf(days_to_expiry <= 10,  '0 to 10 days',
            days_to_expiry <= 30,  '11 to 30 days',
            days_to_expiry <= 60,  '31 to 60 days',
            days_to_expiry <= 120, '61 to 120 days',
                                   'over 120 days')   AS dte_bucket,
    round(100 * avg(toFloat64(implied_volatility)), 1) AS atm_iv_pct,
    count()                                            AS contract_count,
    formatDateTime(max(date), '%b %e, %Y')             AS as_of
FROM global_markets.options_greeks
WHERE underlying_symbol = 'ZM'
  AND iv_converged = 1
  AND volume > 0
  AND toFloat64(underlying_close) > 0
  AND abs(toFloat64(strike_price) / toFloat64(underlying_close) - 1) < 0.05
  AND date >= (
        SELECT max(date)
        FROM global_markets.options_greeks
        WHERE underlying_symbol = 'ZM' AND iv_converged = 1
      ) - 7
GROUP BY dte_bucket
ORDER BY min(days_to_expiry)
$