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

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What Are Put Options?
The same put at SPY's June peak vs its June troughseries · 2026-08-13 · 2×6Preview: a 2-point series, ending lower. The SPY put's delta stayed negative through its whole lifeseries · 2026-08-13 · 31×2Preview: a 16-point series, ending higher.
Wash Sale Rule and Options: The 61-Day Window
How many trading sessions fit inside a 61 day wash sale windowseries · 2026-08-13 · 30×4Preview: a 16-point series, roughly flat. One full 61 day wash sale window on the tape: AAPL, Dec 1 2025 through Jan 30 2026series · 2026-08-13 · 42×3Preview: a 16-point series, ending lower. Average call and put delta by strike distance, AAPL, 20 to 45 days to expiry, June 2026ranking · 2026-08-13 · 5×4Preview: 5 ranked values, largest first. Every December session and how far its wash sale window reaches into the new yearseries · 2026-08-13 · 22×4Preview: a 16-point series, ending higher.
Self-Match Prevention and Wash Trades
Venues quoting and printing the same stock in one 15-minute windowranking · 2026-08-13 · 6×3Preview: 6 ranked values, largest first. Trade condition flags on one full sessionranking · 2026-08-13 · 10×3Preview: 10 ranked values, largest first. Option contracts with volume on one underlying, June 2026series · 2026-08-13 · 21×3Preview: a 16-point series, ending lower. Prints per 15-minute bucket, one full sessionseries · 2026-08-13 · 64×2Preview: a 16-point series, ending lower.
Self-Hosted A-Share Quant Workbench, Explained
The twelve biggest forward stock splits on US listings, 1 January to 13 August 2026ranking · 2026-08-13 · 12×3Preview: 12 ranked values, largest first. What crossing the spread costs: average quoted spread, six US listings, midday 17 June 2026ranking · 2026-08-13 · 6×2Preview: 6 ranked values, smallest first. How far the price travels inside one minute: KO, by New York clock time, 17 June 2026series · 2026-08-13 · 18×2Preview: a 16-point series, ending higher.
Brier Score: How to Grade a Forecast
Brier score of the market's own stated probability, by underlyingranking · 2026-08-13 · 6×4Preview: 6 ranked values, smallest first. The market's Brier score across expiry horizons, SPYranking · 2026-08-13 · 6×4Preview: 6 ranked values, smallest first. SPY option deltas against how often those contracts finished in the moneyranking · 2026-08-13 · 10×4Preview: 10 ranked values, smallest first.
Ratio Spreads: Breakevens and Naked Risk
AAPL 25-session moves since January 2021, by sizeranking · 2026-08-13 · 6×3Preview: 6 ranked values, largest first.
Pairs Trading and Cointegration Explained
Weekly z score of the KO/PEP spread, hedge ratio fitted on 2023 onlyseries · 2026-08-13 · 105×2Preview: a 16-point series, ending higher. Where the KO/PEP spread sat twenty sessions later, by starting z score (2019-2025)ranking · 2026-08-13 · 6×4Preview: 6 ranked values, smallest first. Daily-return correlation vs price-level correlation, five familiar pairs (2024-2025)ranking · 2026-08-13 · 5×3Preview: 5 ranked values, largest first. Hedge ratio refitted each calendar year, two sector pairsranking · 2026-08-13 · 7×3Preview: 7 ranked values, smallest first.
Implied Volatility vs Vega: The Difference
Where vega peaks: AAPL vega and IV across strikes, 20 to 45 days out (July 2026)ranking · 2026-08-13 · 12×4Preview: 12 ranked values, largest first. Same underlying, same IV, rising vega: AAPL by days to expiry (July 2026)ranking · 2026-08-13 · 14×4Preview: 14 ranked values, largest first. Contract days behind the weekly IV series, by monthseries · 2026-08-13 · 12×5Preview: a 12-point series, ending higher. One input, three levels: weekly average IV for AAPL, NVDA and KO (20 to 45 days out)series · 2026-08-13 · 53×5Preview: a 16-point series, ending higher.
Half-Penny Tick Sizes Under Rule 612
Average quoted spread and time on the penny floor, pinned sessionranking · 2026-08-13 · 8×3Preview: 8 ranked values, smallest first. Share of the session spent at each quoted spread, three namesranking · 2026-08-13 · 5×4Preview: 5 ranked values, largest first. Share of each 15 minute bucket spent at a one cent quoted spreadseries · 2026-08-13 · 30×3Preview: a 16-point series, ending higher. What one cent is worth, as a share of the closing priceranking · 2026-08-13 · 8×3Preview: 8 ranked values, largest first.
PCAP Market Data: How Market Replay Works
Trade prints per second across the electronic day, June 10 2026series · 2026-08-12 · 64×3Preview: a 16-point series, roughly flat. One minute of AAPL quotes, second by second, 09:30 ET on June 10 2026series · 2026-08-12 · 60×3Preview: a 16-point series, roughly flat. Quote messages per trade, 09:30 to 10:00 ET on June 10 2026ranking · 2026-08-12 · 5×3Preview: 5 ranked values, largest first. AAPL quote clocks, SIP stamp minus exchange stamp, 09:30 to 11:00 ET on June 10 2026series · 2026-08-12 · 9×4Preview: a 9-point series, ending higher.
Options Volume vs. Open Interest, Explained
Volume accumulates live: July 6, 2026 in half-hour buckets (ET), with a running totalseries · 2026-08-12 · 14×3Preview: a 14-point series, ending higher. Top 10 underlying roots by contracts traded, July 6, 2026table · 2026-08-12 · 10×5 One day of the US options tape: Monday, July 6, 2026scalar · 2026-08-12 · 1×860.6 July 6, 2026 volume by time to expiration: the tape is short-dated, the listed universe is nottable · 2026-08-12 · 5×5 Ten sessions of one long-dated contract: the SPY $620 put expiring 2026-12-18series · 2026-08-12 · 10×3Preview: a 10-point series, roughly flat. The ten busiest option contracts of July 6, 2026table · 2026-08-12 · 10×5
MBO vs MBP Order Book Data Explained
Trade size mix in the same window (AAPL, 10:00 to 10:30 a.m. ET, June 16, 2026)ranking · 2026-08-12 · 5×4Preview: 5 ranked values, largest first. What changed between consecutive top-of-book messages (AAPL, 10:00 to 10:30 a.m. ET, June 16, 2026)ranking · 2026-08-12 · 4×3Preview: 4 ranked values, smallest first. Top-of-book messages against prints, 10:00 to 10:30 a.m. ET, June 16, 2026ranking · 2026-08-12 · 5×4Preview: 5 ranked values, largest first.
Market Recap: Week of July 20, 2026
Next week on the calendar: closures, ex-dividends, splits, and the expiry pullscalar · 2026-08-12 · 1×60 SPY median quoted spread and NBBO updates per session, regular hours, July 20-24series · 2026-08-12 · 5×5Preview: a 5-point series, ending higher. SPY by session: close, change, and share volume, July 20-24series · 2026-08-12 · 5×4Preview: a 5-point series, roughly flat. Options contracts, same-day share, and call share by session, July 20-24series · 2026-08-12 · 5×5Preview: a 5-point series, ending higher. SEC filings by session and form type, July 20-24series · 2026-08-12 · 5×5Preview: a 5-point series, roughly flat. Advancers and decliners per session, names with $5M+ traded, July 20-24series · 2026-08-12 · 5×5Preview: a 5-point series, roughly flat. Top names by regular-hours dollar volume, full week July 20-24ranking · 2026-08-12 · 8×3Preview: 8 ranked values, largest first. Daily short-volume file coverage: tickers on file and short shares, July 20-24series · 2026-08-12 · 5×4Preview: a 5-point series, roughly flat. Session verification: sessions, bars, holiday rows, up and down closes, next closurescalar · 2026-08-12 · 1×95 The week's corporate calendar: dividends, splits, listings, newsscalar · 2026-08-12 · 1×917,144 SPY's week in trailing-year context (open-to-close weekly returns)scalar · 2026-08-12 · 1×5-1.1 SPY / QQQ / DIA / IWM: week of July 20 vs the July 17 close, with the prior week's changetable · 2026-08-12 · 4×5 Sector ETFs, full-week change: July 24 close vs July 17 closeranking · 2026-08-12 · 11×3Preview: 11 ranked values, largest first. Treasury curve by session, July 17 print through July 24series · 2026-08-12 · 6×6Preview: a 6-point series, ending higher. Weekly movers: ten biggest gainers and decliners, regular-hours closes, $5M+ traded, splits excludedtable · 2026-08-12 · 20×6 Weekly breadth: July 24 regular close vs July 17 regular close, names with $5M+ traded during the weekscalar · 2026-08-12 · 1×62,437
How to Estimate Queue Position From L2 Data
How AAPL prints break down by trade size, June 10 2026ranking · 2026-08-12 · 5×3Preview: 5 ranked values, largest first. Average quoted spread and time at a one cent spread, midday June 10 2026ranking · 2026-08-12 · 6×3Preview: 6 ranked values, smallest first. Top of book messages against prints on the tape, AAPL, June 10 2026series · 2026-08-12 · 8×4Preview: a 8-point series, ending higher. The best bid and the price levels it visited, AAPL, 15 minute bucketsseries · 2026-08-12 · 24×3Preview: a 16-point series, ending lower.
Held vs Not-Held Orders: Broker Discretion
Distance from AAPL's daily VWAP to that morning's opening printseries · 2026-08-12 · 9×2Preview: a 9-point series, ending higher. Average gap between the daily VWAP and the open, June 2026ranking · 2026-08-12 · 6×3Preview: 6 ranked values, largest first. Share of AAPL prints and volume by trade size, June 17 2026ranking · 2026-08-12 · 5×3Preview: 5 ranked values, largest first. Average quoted spread by half hour, AAPL and KO, June 17 2026series · 2026-08-12 · 15×3Preview: a 15-point series, ending higher.
How Fractional Shares Hit the Tape
Small AAPL print sizes: five sessions in January 2026 against five in July 2026table · 2026-08-12 · 26×3 Average shares per print by month, September 2025 through July 2026series · 2026-08-12 · 11×5Preview: a 11-point series, ending lower. Odd lots, round lots and sub-one-share prints across six names, July 8 to 10, 2026ranking · 2026-08-12 · 6×4Preview: 6 ranked values, largest first. AAPL average print size across the February 2026 boundaryseries · 2026-08-12 · 19×4Preview: a 16-point series, roughly flat.
How Buffer ETFs Work: Caps and Resets
A 15% cap and 9% buffer, seen from three entry pointsranking · 2026-08-12 · 21×4Preview: 16 ranked values, smallest first. SPY calendar-year price return against a 15% cap and 9% bufferranking · 2026-08-12 · 12×3Preview: 12 ranked values, smallest first. Remaining buffer and remaining cap by entry pointranking · 2026-08-12 · 11×3Preview: 11 ranked values, smallest first. Compounding the index against the buffered payoff, net of a 0.79% feeranking · 2026-08-12 · 12×3Preview: 12 ranked values, smallest first.
Who Are the Biggest Market Makers?
Where Apple trades printed on June 10, 2026, by venueranking · 2026-08-11 · 15×3Preview: 15 ranked values, largest first. Quoted spread and quote traffic over fifteen minutes, June 10, 2026table · 2026-08-11 · 5×5 Listed option series carrying data on one date, by underlyingranking · 2026-08-11 · 5×4Preview: 5 ranked values, largest first. Share of Apple volume printed off exchange, by monthseries · 2026-08-11 · 12×2Preview: a 12-point series, ending lower.
What Is the Put-Call Ratio? A Data Guide
A decade of SPY put-call ratios: median, low and high of the daily reading by yeartable · 2026-08-11 · 12×5 Put-call ratio by underlying: five of the most active names, June 2026ranking · 2026-08-11 · 5×3Preview: 5 ranked values, largest first. Market-wide put-call ratio by day: every listed US option, June 1 through July 10, 2026series · 2026-08-11 · 28×4Preview: a 16-point series, ending lower. The June 2026 put-call range: median, high and low of the daily market-wide ratioscalar · 2026-08-11 · 1×50.793 Index-linked vs single-stock options: put-call ratio by population, June 2026ranking · 2026-08-11 · 3×4Preview: 3 ranked values, largest first. Put-call ratio by days to expiration: every listed US option, June 2026ranking · 2026-08-11 · 5×4Preview: 5 ranked values, largest first.
What Is 0DTE? Zero Days to Expiry Options
July 6, 2026: top roots by same-day-expiry options volumeranking · 2026-08-11 · 8×3Preview: 8 ranked values, largest first. The receipt: July 6, 2026 session completeness and OCC parse coveragescalar · 2026-08-11 · 1×6390 June 2026: whole-month options volume and its same-day-expiry sharescalar · 2026-08-11 · 1×41,477.9 How July 6's same-day SPY contracts finished: out of the money vs. in the moneytable · 2026-08-11 · 2×5 July 6, 2026: whole-tape options volume by days to expiryranking · 2026-08-11 · 5×3Preview: 5 ranked values, largest first. One 0DTE contract, all day: SPY's busiest same-day call and put, July 6, 2026series · 2026-08-11 · 14×4Preview: a 14-point series, ending higher. July 6, 2026: SPY's two busiest same-day contractsranking · 2026-08-11 · 2×3Preview: 2 ranked values, largest first.
DTE Meaning in Options: Days to Expiration
DTE menus compared: expirations traded and 0DTE share by underlying, July 8, 2026table · 2026-08-11 · 6×6 0DTE's rise: same-day share of SPY option volume, June 8-12 of each yearranking · 2026-08-11 · 7×4Preview: 7 ranked values, smallest first. The front of the curve: share of July 8, 2026 volume within a week of expiryscalar · 2026-08-11 · 1×361.8 Options volume by days to expiration: every US option traded July 8, 2026ranking · 2026-08-11 · 6×3Preview: 6 ranked values, largest first. DTE, worked on real contracts: SPY's most-traded option in each DTE band, July 8, 2026table · 2026-08-11 · 6×5 The price of time: at-the-money SPY call price by DTE, midday July 8, 2026series · 2026-08-11 · 11×3Preview: a 11-point series, ending lower.
The January Effect: Does It Still Work?
SPY share volume around the turn of the year, averaged since 2011ranking · 2026-08-11 · 19×3Preview: 16 ranked values, largest first. Distinct symbols printing at least one session, by yearranking · 2026-08-11 · 20×2Preview: 16 ranked values, smallest first. The tape by average dollar volume, June 2026ranking · 2026-08-11 · 5×3Preview: 5 ranked values, largest first.
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)
$