what-time-do-options-start-trading
spy_open_rampseries ·
2026-08-26 · 46×3
session_clockseries ·
2026-08-26 · 21×3
early_closesseries ·
2026-08-26 · 2×6
Weekly Market Recap: The Week in Numbers
Where the volume went: most dollars traded over the past weekranking ·
2026-08-26 · 8×2
The eleven S&P 500 sectors over the past weekranking ·
2026-08-26 · 11×2
Biggest stock losers over the past weekranking ·
2026-08-26 · 7×3
The major index ETFs over the past weekranking ·
2026-08-26 · 4×4
Biggest stock gainers over the past weekranking ·
2026-08-26 · 7×3
Daily market breadth: advancers vs decliners each session (names trading $500M+)series ·
2026-08-26 · 5×3
Upcoming Stock Splits Calendar
Upcoming US stock splits: announced, with a future effective datetable ·
2026-08-26 · 30×5
Announced upcoming splits by directionranking ·
2026-08-26 · 2×2
Announced stock splits by effective month: forward vs reverseseries ·
2026-08-26 · 5×4
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 ·
2026-08-26 · 3×8
Who goes ex-dividend in the next 14 days: names, cadence and implied yield by size bandtable ·
2026-08-26 · 4×5
Names going ex-dividend, day by day: the next seven days of declared recordsseries ·
2026-08-26 · 5×5
Ex-dividend dates by calendar month: three-year average, quarterly vs monthly payersseries ·
2026-08-26 · 12×4
Thirteen big dividend and income funds: last ex-date, cadence, and the implied next ex-dateseries ·
2026-08-26 · 13×8
Forward-declared ex-dividend records on file: the receipt behind this calendarscalar ·
2026-08-26 · 1×54,357
Every mega-cap ex-dividend event of the past six months: price path from the pre-ex closetable ·
2026-08-26 · 5×6
Largest companies going ex-dividend in the next 14 days: amount, pay date, indicated yieldseries ·
2026-08-26 · 12×8
Unusual Options Activity: Last Session
Market-wide options volume by session, with monthly expirations labelledseries ·
2026-08-26 · 25×5
Calls or puts: the board's call and put contract volume on the same sessiontable ·
2026-08-26 · 10×5
What follows a heavy options session: next-session absolute move vs. the same names on an ordinary daytable ·
2026-08-26 · 5×6
What the session's contracts were made of: options volume by days to expiryranking ·
2026-08-26 · 6×4
Unusual options activity: last completed session vs. each underlying's own 20-session averagetable ·
2026-08-26 · 10×8
Recent Stock Splits (Forward and Reverse)
Forward vs reverse splits executed in the last 45 daysranking ·
2026-08-26 · 2×2
Recent reverse stock splits (shares consolidated), last 30 daysranking ·
2026-08-26 · 15×4
Recent forward stock splits (shares multiplied), last 60 days, ETFs excludedranking ·
2026-08-26 · 15×4
Option Expiration Cycles Explained
Third Friday expirations over the next fourteen months, by underlyings listing themranking ·
2026-08-26 · 14×3
Monthly expirations beyond 300 days out, by underlyings listing themranking ·
2026-08-26 · 14×2
Listed expiration dates, one broad lineup against a thinner chainranking ·
2026-08-26 · 6×4
Every expiration listed on the AAPL chain, with contracts on each dateseries ·
2026-08-26 · 23×4
Most Shorted Stocks Right Now, Measured
The receipts: universe size, filter bite, median crowding, and list churn at the latest printscalar ·
2026-08-26 · 1×522,480
Largest short positions by shares: latest settlement, liquid namesranking ·
2026-08-26 · 10×4
Crowding leaders vs. their own price: about one month of sessionsseries ·
2026-08-26 · 5×5
GME through the January 2021 squeeze: the same three columns, settlement by settlementseries ·
2026-08-26 · 10×4
Today's top-3 crowding leaders, traced back eight settlementsseries ·
2026-08-26 · 8×4
Biggest days-to-cover increases, latest settlement vs. the prior printranking ·
2026-08-26 · 8×4
Highest days to cover among liquid names: latest settlement on filetable ·
2026-08-26 · 10×5
Stock Market Holidays 2026–2027: NYSE & Nasdaq
Upcoming US stock market holidays and early closesseries ·
2026-08-26 · 12×6
Recently-passed weekday closures, recovered from the SPY tapeseries ·
2026-08-26 · 4×3
Regular trading sessions over the trailing yearscalar ·
2026-08-26 · 1×3252
The closure calendar ahead, at a glancescalar ·
2026-08-26 · 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 ·
2026-08-26 · 2×5
SPY across recent weekends and holiday weekends: Friday's close vs. the reopening printseries ·
2026-08-26 · 11×6
Every upcoming NYSE closure and early close on the calendar feed, with a countdownseries ·
2026-08-26 · 12×6
Unscheduled closures on the tape: zero regular-session bars on an ordinary weekdayseries ·
2026-08-26 · 5×4
Market status computed at this page's refresh: weekday check, holiday check, and the ET clockscalar ·
2026-08-26 · 1×70
The most recent session on the tape: bar count, same-day SPY options prints, and the last half-day observedscalar ·
2026-08-26 · 1×6204
Weekdays in the trailing year when stocks traded but no Treasury yield printedtable ·
2026-08-26 · 2×2
Highest Implied Volatility Stocks Right Now
SPY, the same measurement: the market's calm benchmarkscalar ·
2026-08-26 · 1×312.3
ATM implied volatility across every actively traded underlying, latest sessionscalar ·
2026-08-26 · 1×5947
Highest ATM implied volatility: liquid single names and funds, latest sessiontable ·
2026-08-26 · 12×5
Dividend Increases & Cuts This Week
Increases against cuts, by week of declaration (complete weeks only)series ·
2026-08-26 · 26×4
Payers across their own share split: the raw change against the split-adjusted changeseries ·
2026-08-26 · 9×7
Increases, cuts and the typical raise this calendar year, by company size (bands use today's market value)table ·
2026-08-26 · 4×6
Dividend increases declared in the last 7 days, largest companies first (capped at 12 rows)series ·
2026-08-26 · 12×8
Dividend cuts declared in the last 90 days, the deepest 14 first (one week is too thin for a table)series ·
2026-08-26 · 14×6
Biggest Stock Gainers and Losers This Week
Biggest stock losers this week (names trading $1B+, leveraged/inverse ETFs excluded)ranking ·
2026-08-26 · 10×4
The four major index ETFs this week, for contextranking ·
2026-08-26 · 4×2
Biggest stock gainers this week (names trading $1B+, leveraged/inverse ETFs excluded)ranking ·
2026-08-26 · 10×4
Biggest Stock Movers This Month
The window and the screened universe behind every board on this pagescalar ·
2026-08-26 · 1×520
Where every screened company landed: monthly returns by bucketranking ·
2026-08-26 · 6×2
Eight household mega-cap names over the same windowranking ·
2026-08-26 · 8×2
Biggest stock losers this month (companies trading $1B+ over the window)ranking ·
2026-08-26 · 10×3
The four major index trackers across the same window, rebased to the first openseries ·
2026-08-26 · 20×5
Biggest stock gainers this month (companies trading $1B+ over the window)ranking ·
2026-08-26 · 10×3
Biggest Stock Gainers & Losers of 2026
Excluded from the boards: 2026 splits large enough to fake a year-to-date moveseries ·
2026-08-26 · 12×5
The screen, stage by stage: how many names survive each filterranking ·
2026-08-26 · 5×2
Biggest stock losers of 2026: worst ten year to date among heavily traded namesranking ·
2026-08-26 · 10×3
The four major index ETFs, year to date, over the same measured windowseries ·
2026-08-26 · 4×4
Biggest stock gainers of 2026: top ten year to date among heavily traded namesranking ·
2026-08-26 · 10×3
Year-to-date breadth: how the screened universe is distributed across return bucketsranking ·
2026-08-26 · 8×3
Stocks at 52-Week Highs and Lows
How far the whole screen sits below its 52-week highranking ·
2026-08-26 · 6×4
Stocks at 52-week lows, ordered by year-to-date returnranking ·
2026-08-26 · 5×3
Where five broad-market ETFs sit inside their own 52-week rangeranking ·
2026-08-26 · 5×4
Stocks at 52-week highs, ordered by year-to-date returnranking ·
2026-08-26 · 12×3
New 52-week highs against new lows, daily, over the past six weeksseries ·
2026-08-26 · 31×4
Unusual Volume Stocks This Week, Measured
How the whole qualifying universe traded this week, bucketed by relative volumeranking ·
2026-08-25 · 7×4
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 · 8×6
The board leader, day by day: daily relative volume and open-to-close change (last 15 sessions)series ·
2026-08-25 · 15×5
Wild multiples the dollar floor removes: highest relative volume among names trading under $500M this weekseries ·
2026-08-25 · 6×5
META Implied Volatility: IV Now & Its History
META ATM implied volatility by time to expiration: latest sessionranking ·
2026-08-25 · 4×3
META vs SPY and QQQ: median ATM implied volatility by month, since mid-2022series ·
2026-08-25 · 50×4
META at-the-money implied volatility by session: trailing 90 daysseries ·
2026-08-25 · 62×2
How Implied Volatility Is Calculated
Where the Newton step misbehaves: AAPL vega by strike zone, June 30, 2026ranking ·
2026-08-25 · 6×3
At the money implied volatility and solver convergence, eight names, June 30, 2026ranking ·
2026-08-25 · 8×4
One solve per contract: AAPL implied volatility by strike zone, June 30, 2026ranking ·
2026-08-25 · 6×3
One AAPL contract, re-solved every session into its July 17, 2026 expiryseries ·
2026-08-25 · 29×3
Short Squeeze Candidates This Week
Squeeze-shaped mechanics: crowded shorts among liquid names, with a rising priceranking ·
2026-08-24 · 12×4
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 · 6×3
From the whole settlement file down to the screened list, one rule at a timeranking ·
2026-08-24 · 4×2
Every input behind this screen, and how many days old it isseries ·
2026-08-24 · 3×3
Liquid names at 5+ and 10+ days to cover, settlement by settlementseries ·
2026-08-24 · 12×4
How Earnings Move Option Greeks
The Tesla $400 May call through its Q1 earnings (Apr 8 - May 6 2026)series ·
2026-08-24 · 21×5
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 · 21×3
AMZN Implied Volatility: IV Now & Its History
AMZN ATM implied volatility by time to expiration: latest sessionranking ·
2026-08-24 · 4×3
Next 100 →
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Settlement dates per year in the short interest file, 2018–2026
Settlement dates per year in the short interest file, 2018–2026
| year | settlement_dates |
|---|---|
| 2018 | 24 |
| 2019 | 24 |
| 2020 | 24 |
| 2021 | 24 |
| 2022 | 24 |
| 2023 | 24 |
| 2024 | 24 |
| 2025 | 24 |
| 2026 | 13 |
the exact SQL behind every number
SELECT toYear(settlement_date) AS year,
uniqExact(settlement_date) AS settlement_dates
FROM global_markets.stocks_short_interest
WHERE settlement_date >= '2018-01-01'
GROUP BY year
ORDER BY year
More from this analysisFINRA Short Interest Data, Explained
Daily short-volume file coverage: the two documented truncation days vs their neighbors
ranking 6×2
→
Every 2026 settlement date on file, with the securities each print covers
series 13×3
→
Percent of reported volume marked short: five large caps on an ordinary day (July 10, 2026)
table 5×6
→
AAPL in the short interest file: the five most recent settlement prints
table 5×5
→
See all 2,173 queries →