STRASMORE/EXPLORE 2,170 QUERIES 22Y EQUITIES · 12Y OPTIONS

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Option Expiration Cycles Explained
Third Friday expirations over the next fourteen months, by underlyings listing themranking · 2026-08-26 · 14×3Preview: 14 ranked values, largest first. Monthly expirations beyond 300 days out, by underlyings listing themranking · 2026-08-26 · 14×2Preview: 14 ranked values, largest first. Listed expiration dates, one broad lineup against a thinner chainranking · 2026-08-26 · 6×4Preview: 6 ranked values, largest first. Every expiration listed on the AAPL chain, with contracts on each dateseries · 2026-08-26 · 23×4Preview: a 16-point series, ending lower.
Weekly Market Recap: The Week in Numbers
Where the volume went: most dollars traded over the past weekranking · 2026-08-25 · 8×2Preview: 8 ranked values, largest first. The eleven S&P 500 sectors over the past weekranking · 2026-08-25 · 11×2Preview: 11 ranked values, largest first. Biggest stock losers over the past weekranking · 2026-08-25 · 7×3Preview: 7 ranked values, smallest first. The major index ETFs over the past weekranking · 2026-08-25 · 4×4Preview: 4 ranked values, largest first. Biggest stock gainers over the past weekranking · 2026-08-25 · 7×3Preview: 7 ranked values, largest first. Daily market breadth: advancers vs decliners each session (names trading $500M+)series · 2026-08-25 · 5×3Preview: a 5-point series, ending higher.
Upcoming Stock Splits Calendar
Upcoming US stock splits: announced, with a future effective datetable · 2026-08-25 · 30×5 Announced upcoming splits by directionranking · 2026-08-25 · 2×2Preview: 2 ranked values, smallest first. Announced stock splits by effective month: forward vs reverseseries · 2026-08-25 · 5×4Preview: a 5-point series, ending lower.
Upcoming Ex-Dividend Dates: Stocks This Week
Three household payers at their last ex-date: prior close, ex-morning open, and the payment for scaleseries · 2026-08-25 · 3×8Preview: a 3-point series, roughly flat. Who goes ex-dividend in the next 14 days: names, cadence and implied yield by size bandtable · 2026-08-25 · 4×5 Names going ex-dividend, day by day: the next seven days of declared recordsseries · 2026-08-25 · 5×5Preview: a 5-point series, ending higher. Ex-dividend dates by calendar month: three-year average, quarterly vs monthly payersseries · 2026-08-25 · 12×4Preview: a 12-point series, ending higher. Thirteen big dividend and income funds: last ex-date, cadence, and the implied next ex-dateseries · 2026-08-25 · 13×8Preview: a 13-point series, ending higher. Forward-declared ex-dividend records on file: the receipt behind this calendarscalar · 2026-08-25 · 1×54,344 Every mega-cap ex-dividend event of the past six months: price path from the pre-ex closetable · 2026-08-25 · 5×6 Largest companies going ex-dividend in the next 14 days: amount, pay date, indicated yieldseries · 2026-08-25 · 12×8Preview: a 12-point series, ending higher.
Unusual Volume Stocks This Week, Measured
How the whole qualifying universe traded this week, bucketed by relative volumeranking · 2026-08-25 · 7×4Preview: 7 ranked values, smallest first. Persistence check: the eight leaders' daily relative volume across the five sessionstable · 2026-08-25 · 8×5 Highest relative volume this week: trailing 5 sessions vs. the prior 40, for names trading $500M+ in the weekseries · 2026-08-25 · 8×6Preview: a 8-point series, ending higher. The board leader, day by day: daily relative volume and open-to-close change (last 15 sessions)series · 2026-08-25 · 15×5Preview: a 15-point series, roughly flat. Wild multiples the dollar floor removes: highest relative volume among names trading under $500M this weekseries · 2026-08-25 · 6×5Preview: a 6-point series, ending higher.
Unusual Options Activity: Last Session
Market-wide options volume by session, with monthly expirations labelledseries · 2026-08-25 · 25×5Preview: a 16-point series, ending higher. Calls or puts: the board's call and put contract volume on the same sessiontable · 2026-08-25 · 10×5 What follows a heavy options session: next-session absolute move vs. the same names on an ordinary daytable · 2026-08-25 · 5×6 What the session's contracts were made of: options volume by days to expiryranking · 2026-08-25 · 6×4Preview: 6 ranked values, largest first. Unusual options activity: last completed session vs. each underlying's own 20-session averagetable · 2026-08-25 · 10×8
Recent Stock Splits (Forward and Reverse)
Forward vs reverse splits executed in the last 45 daysranking · 2026-08-25 · 2×2Preview: 2 ranked values, largest first. Recent reverse stock splits (shares consolidated), last 30 daysranking · 2026-08-25 · 15×4Preview: 15 ranked values, largest first. Recent forward stock splits (shares multiplied), last 60 days, ETFs excludedranking · 2026-08-25 · 15×4Preview: 15 ranked values, smallest first.
Most Shorted Stocks Right Now, Measured
The receipts: universe size, filter bite, median crowding, and list churn at the latest printscalar · 2026-08-25 · 1×522,339 Largest short positions by shares: latest settlement, liquid namesranking · 2026-08-25 · 10×4Preview: 10 ranked values, largest first. Crowding leaders vs. their own price: about one month of sessionsseries · 2026-08-25 · 4×5Preview: a 4-point series, ending higher. GME through the January 2021 squeeze: the same three columns, settlement by settlementseries · 2026-08-25 · 10×4Preview: a 10-point series, ending lower. Today's top-3 crowding leaders, traced back eight settlementsseries · 2026-08-25 · 8×4Preview: a 8-point series, ending higher. Biggest days-to-cover increases, latest settlement vs. the prior printranking · 2026-08-25 · 8×4Preview: 8 ranked values, largest first. Highest days to cover among liquid names: latest settlement on filetable · 2026-08-25 · 10×5
META Implied Volatility: IV Now & Its History
META ATM implied volatility by time to expiration: latest sessionranking · 2026-08-25 · 4×3Preview: 4 ranked values, smallest first. META vs SPY and QQQ: median ATM implied volatility by month, since mid-2022series · 2026-08-25 · 50×4Preview: a 16-point series, ending lower. META at-the-money implied volatility by session: trailing 90 daysseries · 2026-08-25 · 62×2Preview: a 16-point series, ending higher.
Stock Market Holidays 2026–2027: NYSE & Nasdaq
Upcoming US stock market holidays and early closesseries · 2026-08-25 · 12×6Preview: a 12-point series, ending higher. Recently-passed weekday closures, recovered from the SPY tapeseries · 2026-08-25 · 4×3Preview: a 4-point series, roughly flat. Regular trading sessions over the trailing yearscalar · 2026-08-25 · 1×3252 The closure calendar ahead, at a glancescalar · 2026-08-25 · 1×610
Is the Stock Market Open Today?
This calendar year's closures: already passed (counted from the tape) plus still ahead (from the calendar)table · 2026-08-25 · 2×5 SPY across recent weekends and holiday weekends: Friday's close vs. the reopening printseries · 2026-08-25 · 11×6Preview: a 11-point series, ending lower. Every upcoming NYSE closure and early close on the calendar feed, with a countdownseries · 2026-08-25 · 12×6Preview: a 12-point series, ending higher. Unscheduled closures on the tape: zero regular-session bars on an ordinary weekdayseries · 2026-08-25 · 5×4Preview: a 5-point series, roughly flat. Market status computed at this page's refresh: weekday check, holiday check, and the ET clockscalar · 2026-08-25 · 1×70 The most recent session on the tape: bar count, same-day SPY options prints, and the last half-day observedscalar · 2026-08-25 · 1×6211 Weekdays in the trailing year when stocks traded but no Treasury yield printedtable · 2026-08-25 · 2×2
How Implied Volatility Is Calculated
Where the Newton step misbehaves: AAPL vega by strike zone, June 30, 2026ranking · 2026-08-25 · 6×3Preview: 6 ranked values, largest first. At the money implied volatility and solver convergence, eight names, June 30, 2026ranking · 2026-08-25 · 8×4Preview: 8 ranked values, largest first. One solve per contract: AAPL implied volatility by strike zone, June 30, 2026ranking · 2026-08-25 · 6×3Preview: 6 ranked values, largest first. One AAPL contract, re-solved every session into its July 17, 2026 expiryseries · 2026-08-25 · 29×3Preview: a 16-point series, ending lower.
Highest Implied Volatility Stocks Right Now
SPY, the same measurement: the market's calm benchmarkscalar · 2026-08-25 · 1×312.3 ATM implied volatility across every actively traded underlying, latest sessionscalar · 2026-08-25 · 1×5947 Highest ATM implied volatility: liquid single names and funds, latest sessiontable · 2026-08-25 · 12×5
Dividend Increases & Cuts This Week
Increases against cuts, by week of declaration (complete weeks only)series · 2026-08-25 · 26×4Preview: a 16-point series, ending lower. Payers across their own share split: the raw change against the split-adjusted changeseries · 2026-08-25 · 9×7Preview: a 9-point series, ending lower. Increases, cuts and the typical raise this calendar year, by company size (bands use today's market value)table · 2026-08-25 · 4×6 Dividend increases declared in the last 7 days, largest companies first (capped at 12 rows)series · 2026-08-25 · 12×8Preview: a 12-point series, ending lower. Dividend cuts declared in the last 90 days, the deepest 14 first (one week is too thin for a table)series · 2026-08-25 · 14×6Preview: a 14-point series, ending higher.
Biggest Stock Gainers and Losers This Week
Biggest stock losers this week (names trading $1B+, leveraged/inverse ETFs excluded)ranking · 2026-08-25 · 10×4Preview: 10 ranked values, smallest first. The four major index ETFs this week, for contextranking · 2026-08-25 · 4×2Preview: 4 ranked values, largest first. Biggest stock gainers this week (names trading $1B+, leveraged/inverse ETFs excluded)ranking · 2026-08-25 · 10×4Preview: 10 ranked values, largest first.
Biggest Stock Movers This Month
The window and the screened universe behind every board on this pagescalar · 2026-08-25 · 1×521 Where every screened company landed: monthly returns by bucketranking · 2026-08-25 · 6×2Preview: 6 ranked values, smallest first. Eight household mega-cap names over the same windowranking · 2026-08-25 · 8×2Preview: 8 ranked values, largest first. Biggest stock losers this month (companies trading $1B+ over the window)ranking · 2026-08-25 · 10×3Preview: 10 ranked values, smallest first. The four major index trackers across the same window, rebased to the first openseries · 2026-08-25 · 21×5Preview: a 16-point series, ending higher. Biggest stock gainers this month (companies trading $1B+ over the window)ranking · 2026-08-25 · 10×3Preview: 10 ranked values, largest first.
Biggest Stock Gainers & Losers of 2026
Excluded from the boards: 2026 splits large enough to fake a year-to-date moveseries · 2026-08-25 · 12×5Preview: a 12-point series, ending higher. The screen, stage by stage: how many names survive each filterranking · 2026-08-25 · 5×2Preview: 5 ranked values, largest first. Biggest stock losers of 2026: worst ten year to date among heavily traded namesranking · 2026-08-25 · 10×3Preview: 10 ranked values, smallest first. The four major index ETFs, year to date, over the same measured windowseries · 2026-08-25 · 4×4Preview: a 4-point series, ending lower. Biggest stock gainers of 2026: top ten year to date among heavily traded namesranking · 2026-08-25 · 10×3Preview: 10 ranked values, largest first. Year-to-date breadth: how the screened universe is distributed across return bucketsranking · 2026-08-25 · 8×3Preview: 8 ranked values, smallest first.
Stocks at 52-Week Highs and Lows
How far the whole screen sits below its 52-week highranking · 2026-08-25 · 6×4Preview: 6 ranked values, smallest first. Stocks at 52-week lows, ordered by year-to-date returnranking · 2026-08-25 · 9×3Preview: 9 ranked values, smallest first. Where five broad-market ETFs sit inside their own 52-week rangeranking · 2026-08-25 · 5×4Preview: 5 ranked values, smallest first. Stocks at 52-week highs, ordered by year-to-date returnranking · 2026-08-25 · 12×3Preview: 12 ranked values, smallest first. New 52-week highs against new lows, daily, over the past six weeksseries · 2026-08-25 · 31×4Preview: a 16-point series, roughly flat.
Short Squeeze Candidates This Week
Squeeze-shaped mechanics: crowded shorts among liquid names, with a rising priceranking · 2026-08-24 · 12×4Preview: 12 ranked values, largest first. The screened names ranked by short interest against shares outstanding (not float)table · 2026-08-24 · 10×5 Every past screened name, by what it did over the next 30 daysranking · 2026-08-24 · 6×3Preview: 6 ranked values, smallest first. From the whole settlement file down to the screened list, one rule at a timeranking · 2026-08-24 · 4×2Preview: 4 ranked values, largest first. Every input behind this screen, and how many days old it isseries · 2026-08-24 · 3×3Preview: a 3-point series, ending lower. Liquid names at 5+ and 10+ days to cover, settlement by settlementseries · 2026-08-24 · 12×4Preview: a 12-point series, ending higher.
How Earnings Move Option Greeks
The Tesla $400 May call through its Q1 earnings (Apr 8 - May 6 2026)series · 2026-08-24 · 21×5Preview: a 16-point series, roughly flat. Tesla's 8-K filings across Q1 2026 (EDGAR index)table · 2026-08-24 · 4×3 Near-the-money Tesla May-expiry implied volatility around the printseries · 2026-08-24 · 21×3Preview: a 16-point series, ending higher.
AMZN Implied Volatility: IV Now & Its History
AMZN ATM implied volatility by time to expiration: latest sessionranking · 2026-08-24 · 4×3Preview: 4 ranked values, smallest first. AMZN vs SPY and QQQ: median ATM implied volatility by month, since mid-2022series · 2026-08-24 · 50×4Preview: a 16-point series, ending lower. AMZN at-the-money implied volatility by session: trailing 90 daysseries · 2026-08-24 · 62×2Preview: a 16-point series, ending higher.
Apple Stock Split History and Ratios
Apple's yearly price range, split-adjusted, 2012 through the current yearranking · 2026-08-24 · 15×4Preview: 15 ranked values, smallest first.
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Debut-day quoted spread by hour: the seasoning process, hour zero

Debut-day quoted spread by hour: the seasoning process, hour zero

as of ranking 5×4read in context →
Debut-day quoted spread by hour: the seasoning process, hour zero — 5 rows by 4 columns, computed from US exchange, SIP and OPRA data.
et_hourmed_spread_bpsquote_updatestwo_sided_updates
11109716596654
125.88990189290
135.24698046964
145.34348943482
154.14968549616
the exact SQL behind every number 
SELECT
    toHour(toTimeZone(sip_timestamp, 'America/New_York')) AS et_hour,
    round(quantileDeterministicIf(0.5)((toFloat64(ask_price) - toFloat64(bid_price)) / ((toFloat64(ask_price) + toFloat64(bid_price)) / 2) * 10000, toUInt64(toUnixTimestamp64Micro(sip_timestamp)), bid_price > 0 AND ask_price > bid_price), 1) AS med_spread_bps,
    count() AS quote_updates,
    countIf(bid_price > 0 AND ask_price > bid_price) AS two_sided_updates
FROM global_markets.cache_stocks_quotes
WHERE ticker = 'SKHYV'
  AND sip_timestamp >= toDateTime64('2026-07-10 13:30:00', 9) AND sip_timestamp < toDateTime64('2026-07-10 20:00:00', 9)
  AND (toHour(sip_timestamp) * 60 + toMinute(sip_timestamp)) BETWEEN 810 AND 1199
GROUP BY et_hour
HAVING countIf(bid_price > 0 AND ask_price > bid_price) > 0
ORDER BY et_hour
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