What Are Put Options?
The same put at SPY's June peak vs its June troughseries ·
2026-08-13 · 2×6
The SPY put's delta stayed negative through its whole lifeseries ·
2026-08-13 · 31×2
Wash Sale Rule and Options: The 61-Day Window
How many trading sessions fit inside a 61 day wash sale windowseries ·
2026-08-13 · 30×4
One full 61 day wash sale window on the tape: AAPL, Dec 1 2025 through Jan 30 2026series ·
2026-08-13 · 42×3
Average call and put delta by strike distance, AAPL, 20 to 45 days to expiry, June 2026ranking ·
2026-08-13 · 5×4
Every December session and how far its wash sale window reaches into the new yearseries ·
2026-08-13 · 22×4
Self-Match Prevention and Wash Trades
Venues quoting and printing the same stock in one 15-minute windowranking ·
2026-08-13 · 6×3
Trade condition flags on one full sessionranking ·
2026-08-13 · 10×3
Option contracts with volume on one underlying, June 2026series ·
2026-08-13 · 21×3
Prints per 15-minute bucket, one full sessionseries ·
2026-08-13 · 64×2
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 · 12×3
What crossing the spread costs: average quoted spread, six US listings, midday 17 June 2026ranking ·
2026-08-13 · 6×2
How far the price travels inside one minute: KO, by New York clock time, 17 June 2026series ·
2026-08-13 · 18×2
Brier Score: How to Grade a Forecast
Brier score of the market's own stated probability, by underlyingranking ·
2026-08-13 · 6×4
The market's Brier score across expiry horizons, SPYranking ·
2026-08-13 · 6×4
SPY option deltas against how often those contracts finished in the moneyranking ·
2026-08-13 · 10×4
Ratio Spreads: Breakevens and Naked Risk
AAPL 25-session moves since January 2021, by sizeranking ·
2026-08-13 · 6×3
Pairs Trading and Cointegration Explained
Weekly z score of the KO/PEP spread, hedge ratio fitted on 2023 onlyseries ·
2026-08-13 · 105×2
Where the KO/PEP spread sat twenty sessions later, by starting z score (2019-2025)ranking ·
2026-08-13 · 6×4
Daily-return correlation vs price-level correlation, five familiar pairs (2024-2025)ranking ·
2026-08-13 · 5×3
Hedge ratio refitted each calendar year, two sector pairsranking ·
2026-08-13 · 7×3
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 · 12×4
Same underlying, same IV, rising vega: AAPL by days to expiry (July 2026)ranking ·
2026-08-13 · 14×4
Contract days behind the weekly IV series, by monthseries ·
2026-08-13 · 12×5
One input, three levels: weekly average IV for AAPL, NVDA and KO (20 to 45 days out)series ·
2026-08-13 · 53×5
Half-Penny Tick Sizes Under Rule 612
Average quoted spread and time on the penny floor, pinned sessionranking ·
2026-08-13 · 8×3
Share of the session spent at each quoted spread, three namesranking ·
2026-08-13 · 5×4
Share of each 15 minute bucket spent at a one cent quoted spreadseries ·
2026-08-13 · 30×3
What one cent is worth, as a share of the closing priceranking ·
2026-08-13 · 8×3
PCAP Market Data: How Market Replay Works
Trade prints per second across the electronic day, June 10 2026series ·
2026-08-12 · 64×3
One minute of AAPL quotes, second by second, 09:30 ET on June 10 2026series ·
2026-08-12 · 60×3
Quote messages per trade, 09:30 to 10:00 ET on June 10 2026ranking ·
2026-08-12 · 5×3
AAPL quote clocks, SIP stamp minus exchange stamp, 09:30 to 11:00 ET on June 10 2026series ·
2026-08-12 · 9×4
Options Volume vs. Open Interest, Explained
Volume accumulates live: July 6, 2026 in half-hour buckets (ET), with a running totalseries ·
2026-08-12 · 14×3
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 · 10×3
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 · 5×4
What changed between consecutive top-of-book messages (AAPL, 10:00 to 10:30 a.m. ET, June 16, 2026)ranking ·
2026-08-12 · 4×3
Top-of-book messages against prints, 10:00 to 10:30 a.m. ET, June 16, 2026ranking ·
2026-08-12 · 5×4
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 · 5×5
SPY by session: close, change, and share volume, July 20-24series ·
2026-08-12 · 5×4
Options contracts, same-day share, and call share by session, July 20-24series ·
2026-08-12 · 5×5
SEC filings by session and form type, July 20-24series ·
2026-08-12 · 5×5
Advancers and decliners per session, names with $5M+ traded, July 20-24series ·
2026-08-12 · 5×5
Top names by regular-hours dollar volume, full week July 20-24ranking ·
2026-08-12 · 8×3
Daily short-volume file coverage: tickers on file and short shares, July 20-24series ·
2026-08-12 · 5×4
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 · 11×3
Treasury curve by session, July 17 print through July 24series ·
2026-08-12 · 6×6
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 · 5×3
Average quoted spread and time at a one cent spread, midday June 10 2026ranking ·
2026-08-12 · 6×3
Top of book messages against prints on the tape, AAPL, June 10 2026series ·
2026-08-12 · 8×4
The best bid and the price levels it visited, AAPL, 15 minute bucketsseries ·
2026-08-12 · 24×3
Held vs Not-Held Orders: Broker Discretion
Distance from AAPL's daily VWAP to that morning's opening printseries ·
2026-08-12 · 9×2
Average gap between the daily VWAP and the open, June 2026ranking ·
2026-08-12 · 6×3
Share of AAPL prints and volume by trade size, June 17 2026ranking ·
2026-08-12 · 5×3
Average quoted spread by half hour, AAPL and KO, June 17 2026series ·
2026-08-12 · 15×3
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 · 11×5
Odd lots, round lots and sub-one-share prints across six names, July 8 to 10, 2026ranking ·
2026-08-12 · 6×4
AAPL average print size across the February 2026 boundaryseries ·
2026-08-12 · 19×4
How Buffer ETFs Work: Caps and Resets
A 15% cap and 9% buffer, seen from three entry pointsranking ·
2026-08-12 · 21×4
SPY calendar-year price return against a 15% cap and 9% bufferranking ·
2026-08-12 · 12×3
Remaining buffer and remaining cap by entry pointranking ·
2026-08-12 · 11×3
Compounding the index against the buffered payoff, net of a 0.79% feeranking ·
2026-08-12 · 12×3
Who Are the Biggest Market Makers?
Where Apple trades printed on June 10, 2026, by venueranking ·
2026-08-11 · 15×3
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 · 5×4
Share of Apple volume printed off exchange, by monthseries ·
2026-08-11 · 12×2
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 · 5×3
Market-wide put-call ratio by day: every listed US option, June 1 through July 10, 2026series ·
2026-08-11 · 28×4
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 · 3×4
Put-call ratio by days to expiration: every listed US option, June 2026ranking ·
2026-08-11 · 5×4
What Is 0DTE? Zero Days to Expiry Options
July 6, 2026: top roots by same-day-expiry options volumeranking ·
2026-08-11 · 8×3
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 · 5×3
One 0DTE contract, all day: SPY's busiest same-day call and put, July 6, 2026series ·
2026-08-11 · 14×4
July 6, 2026: SPY's two busiest same-day contractsranking ·
2026-08-11 · 2×3
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 · 7×4
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 · 6×3
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 · 11×3
The January Effect: Does It Still Work?
SPY share volume around the turn of the year, averaged since 2011ranking ·
2026-08-11 · 19×3
Distinct symbols printing at least one session, by yearranking ·
2026-08-11 · 20×2
The tape by average dollar volume, June 2026ranking ·
2026-08-11 · 5×3
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
| dte_bucket | atm_iv_pct | contract_count | as_of |
|---|---|---|---|
| 0 to 10 days | 53.8 | 162 | Oct 22, 2026 |
| 11 to 30 days | 42.9 | 149 | Oct 22, 2026 |
| 31 to 60 days | 44.7 | 83 | Oct 22, 2026 |
| 61 to 120 days | 45 | 47 | Oct 22, 2026 |
| over 120 days | 44.7 | 71 | Oct 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)
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