Why Your Options Order Isn't Getting Filled
Median quoted spread on Apple options by contract price, 30 second window on June 17 2026ranking ·
2026-08-07 · 5×3
Apple options quote updates, second by second, 2:00 p.m. ET on June 17 2026series ·
2026-08-07 · 30×3
What Is Option Rho? The Interest Rate Greek
Weekly average rho: SPY January 2027 calls against a rolling front-month seriesseries ·
2026-08-07 · 52×3
Average SPY option rho by time to expiration, indexed to the front monthranking ·
2026-08-07 · 6×4
Average rho on long-dated SPY options, by strike against the share priceranking ·
2026-08-07 · 7×4
Start-to-end change in Treasury yields by calendar year, in basis pointsranking ·
2026-08-07 · 13×3
Trade Condition Codes Explained
Share of a session's prints carrying price-ineligible conditionsranking ·
2026-08-07 · 5×4
Two versions of the same AAPL session high, fifteen minutes at a timeseries ·
2026-08-07 · 26×3
Condition code families defined for US stocksranking ·
2026-08-07 · 8×2
One AAPL session, every print grouped by its sale conditionranking ·
2026-08-07 · 12×3
The Sub-Penny Rule and Price Improvement
What one cent is worth, by share price bandranking ·
2026-08-07 · 8×3
The penny tick and the quoted gap, in basis pointstable ·
2026-08-07 · 7×5
Share of prints that landed on a sub-penny priceranking ·
2026-08-07 · 7×3
AAPL sub-penny print rate by trade size, 17 June 2026ranking ·
2026-08-07 · 5×3
Rule 605 vs 606: Execution Quality Reports
Where AAPL prints fall by trade size, June 17, 2026ranking ·
2026-08-07 · 5×3
Share of June 2026 volume reported to FINRA facilitiesranking ·
2026-08-07 · 5×3
AAPL quoted spread across the trading clock, June 17, 2026series ·
2026-08-07 · 22×3
Effective spread against quoted spread by trade size, AAPLranking ·
2026-08-07 · 4×4
Level 1 vs Level 2 vs Level 3 Market Data
Executed volume by price level: the traded ladder (KO, 30 minutes)table ·
2026-08-07 · 63×3
Level 1 top of book: quoted spread across a full session (AAPL, June 17 2026)series ·
2026-08-07 · 32×3
Top-of-book message rate, minute by minute (NVDA, one hour)series ·
2026-08-07 · 60×3
Top-of-book spread and quote message count by name (10:00 to 11:00 a.m. ET)ranking ·
2026-08-07 · 5×3
Japanese IPO Lockups: The 1.5x Release Rule
One US listing traced against a flat line at 1.5x its offer priceseries ·
2026-08-07 · 82×3
Share of US listings trading at 1.5x their offer price, by day since listingranking ·
2026-08-07 · 19×2
US listings clearing 1.5x the offer price on the first close, by listing yearranking ·
2026-08-07 · 8×4
Iron Condor vs Iron Butterfly: Break-Evens
Vega across the SPY ladder, indexed to the at-the-money strike, May 2026ranking ·
2026-08-07 · 13×3
What a 30-day SPY option cost at each distance from spot, May 2026 averagesranking ·
2026-08-07 · 13×3
At-the-money implied volatility and the 30-day expected move it prices, May 2026ranking ·
2026-08-07 · 6×3
Strikes that actually traded per session, 20 to 45 days out, May 2026series ·
2026-08-07 · 6×3
How to Roll an Option Position: Up and Out
Moving the strike up costs premium: AAPL calls 30 to 45 days outranking ·
2026-08-07 · 6×3
What extra time is worth: at-the-money AAPL call premium by days to expiryranking ·
2026-08-07 · 6×3
Time value left in an in-the-money KO call as expiry approachesranking ·
2026-08-07 · 5×4
2026 cash dividends per share at eight widely held payersranking ·
2026-08-07 · 8×4
How ETF Creation and Redemption Works
Quoted spread against average share volume, US listed ETFsranking ·
2026-08-07 · 5×3
One session of SPY prints, sorted into trade size bucketsranking ·
2026-08-07 · 4×4
Quoted spread through the session: large cap fund vs micro cap fundseries ·
2026-08-07 · 79×3
Daily range and volume in a high yield bond ETF, month by monthranking ·
2026-08-07 · 9×3
Is a Dividend Safe? Free Cash Flow Test
Same year, two payout ratios: earnings basis against cash basis (illustrative, percent)ranking ·
2026-08-07 · 2×2
Illustrative year: the reconciliation behind the coverage test (hypothetical manufacturer, $ millions)ranking ·
2026-08-07 · 6×2
Credit Spread vs Debit Spread: Same Trade?
Every $5-wide vertical on one AAPL chain: debit paid against credit takenranking ·
2026-08-07 · 6×4
Profit and loss at expiration: the debit structure against the credit structureranking ·
2026-08-07 · 8×4
Put-call parity on one AAPL chain: call minus put against stock minus striketable ·
2026-08-07 · 5×8
Where the volume sat on that AAPL chain: call contracts against put contracts, by strikeranking ·
2026-08-07 · 14×4
Anchored VWAP Explained: Formula and Uses
How much the newest session can move an anchored VWAP (AAPL)ranking ·
2026-08-07 · 13×2
Anchored at each name's own lowest close of the past twelve monthstable ·
2026-08-07 · 5×5
Daily session VWAP against a VWAP anchored on one date (AAPL)series ·
2026-08-07 · 62×4
The same stock and the same last price, twelve different anchors (AAPL)ranking ·
2026-08-07 · 12×3
Why Stock Quotes Are Delayed 15 Minutes
How often the last price changes, minute by minute (June 2026)ranking ·
2026-08-06 · 6×3
The 15 minute gap across six household tickers (June 2026)ranking ·
2026-08-06 · 6×3
How far SPY travels in 15 minutes, by hour of the session (June 2026)series ·
2026-08-06 · 7×4
Live price against a 15 minute delayed view, one SPY sessionseries ·
2026-08-06 · 37×5
When Are 13F Filings Due? 2026 Deadlines
Share of reported volume marked short, Q1 2026 disclosure windowranking ·
2026-08-06 · 5×3
The four 13F deadlines for the 2026 quartersseries ·
2026-08-06 · 4×7
AAPL: quarter-end snapshot price vs the price on the 13F deadlineseries ·
2026-08-06 · 8×7
Trading during the Q1 2026 disclosure window, five household namesranking ·
2026-08-06 · 5×4
What Is the Sharpe Ratio? Formula and Math
Sharpe against Sortino, six names, calendar 2025ranking ·
2026-08-06 · 6×4
SPY annualized Sharpe ratio, year by year, fixed 4.25% assumed rateranking ·
2026-08-06 · 10×3
Annualized Sharpe ratio by name, calendar 2025, assumed 4.25% risk-free rateranking ·
2026-08-06 · 6×4
One year of SPY, three sampling frequencies, one annualized Sharpe ratioranking ·
2026-08-06 · 3×3
Same SPY 2025 returns, six assumed risk-free ratesranking ·
2026-08-06 · 6×4
What H1 and H2 Mean in Company Reporting
Where nine familiar issuers close their reported periodstable ·
2026-08-06 · 9×5
The most recent 10-K on file for the same nine issuersranking ·
2026-08-06 · 9×4
Annual and interim filing forms counted over calendar H1 2026ranking ·
2026-08-06 · 3×3
Companies filing a 10-K annual report in each month of calendar H1 2026series ·
2026-08-06 · 6×3
Reproducible Backtest in Python, No API Key
A 20/50 moving-average crossover on SPY, year by year, against holdingranking ·
2026-08-06 · 9×4
The same 20/50 rule on five liquid names, 2021 through 2025ranking ·
2026-08-06 · 5×4
Same rule, prior-session signal against same-session signal, SPY by yearranking ·
2026-08-06 · 9×4
Portfolio Delta and Beta Weighting Explained
AAPL call and put delta across the strike ladder, 20 to 45 days to expiryranking ·
2026-08-06 · 12×4
A three-leg book, raw delta against beta weighted deltatable ·
2026-08-06 · 3×6
The same two betas, measured over six different lookback windowsranking ·
2026-08-06 · 6×3
Beta, price ratio, and SPY-share equivalent per share heldranking ·
2026-08-06 · 7×4
Iceberg Orders Explained: Hidden Liquidity
Most repeated price and size pairings, AAPL, June 17, 2026table ·
2026-08-06 · 12×5
Every AAPL print on June 17, 2026, grouped by trade sizeranking ·
2026-08-06 · 6×4
Average shares per print, monthly, MSFT and KOseries ·
2026-08-06 · 90×4
The busiest price and size pairing, half hour by half hourscalar ·
2026-08-06 · 1×367
How the Put/Call Ratio Is Calculated
Daily single stock put/call ratio against its 21 session averageseries ·
2026-08-06 · 84×4
Where the daily ratio actually sits, twelve months of sessionsranking ·
2026-08-06 · 3×4
Monthly median put/call ratio: broad market ETFs against single stocksseries ·
2026-08-06 · 12×4
Daily put/call volume ratio, SPY against AAPL, July 2026series ·
2026-08-06 · 22×4
Put and call volume for eight household names, July 2026ranking ·
2026-08-06 · 8×4
ETF Premium and Discount to NAV, Explained
How far seven ETFs travel in a regular session, first half of 2026ranking ·
2026-08-06 · 7×3
Median session move by month, 2026 first halfseries ·
2026-08-06 · 6×4
Average minute bar range by ET clock time, second quarter 2026series ·
2026-08-06 · 26×4
Median move before and after European markets close, first half of 2026ranking ·
2026-08-06 · 4×3
Do Stocks Fall When a Lockup Expires?
Average daily volume before and after the 180 day mark, 2023-2024 IPOsranking ·
2026-08-06 · 6×4
Short-marked share of reported volume, 30 days either side of the markranking ·
2026-08-06 · 6×3
RDDT daily close and volume around its 180 day mark, Aug to Oct 2024series ·
2026-08-06 · 53×3
Price change over the 30 days before and after the 180 day markranking ·
2026-08-06 · 6×3
Do Stock Gaps Always Get Filled? The Data
Average one-minute range and volume by time of day, 2025series ·
2026-08-06 · 26×3
Same-session gap fill rate by gap size, eight large caps, 2021 to 2026ranking ·
2026-08-06 · 5×3
Gap fill rate by how heavy the gap day's volume wasranking ·
2026-08-06 · 3×4
Share of 1%+ gaps filled, by how long you waitranking ·
2026-08-06 · 4×3
Box Spread Options and the Implied Loan Rate
Annualised cost of a hypothetical 10 cent fill error on a ten point boxranking ·
2026-08-06 · 12×2
Where SPY option volume sits, by strike distance from spot (June 2026)ranking ·
2026-08-06 · 5×3
A ten point box valued at every level SPY closed at in June 2026table ·
2026-08-06 · 8×5
Net delta of a SPY box as the upper strike widens (June 1, 2026)ranking ·
2026-08-06 · 9×4
When Does a Stock Split Take Effect?
Completed forward splits of 3-for-1 or larger: selected large-cap names, 2022 to 2026ranking ·
2026-08-05 · 12×4
US-listed splits by ratio band, 2021 to mid-2026: the 25% line in the dataranking ·
2026-08-05 · 5×3
NVDA around its 10-for-1 split: regular-session close and volume, June 3 to June 14, 2024series ·
2026-08-05 · 10×4
Effective dates by weekday: US-listed splits, 2021 to mid-2026series ·
2026-08-05 · 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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