OptionSpace: What's newhttps://optionspace.ai/whats-new.htmlImprovements to OptionSpace, dated.en More accurate probability simulatorhttps://optionspace.ai/whats-new.html#probability-checkedhttps://optionspace.ai/whats-new.html#probability-checkedWed, 11 Nov 2026 12:00:00 +0000DashboardsThe market distribution is now shown exactly as the fitted smile implies it, with a note when it fails a check. Vol surfaces in the Python packagehttps://optionspace.ai/whats-new.html#python-092https://optionspace.ai/whats-new.html#python-092Tue, 10 Nov 2026 12:00:00 +0000API & PythonFetch every expiry's smile at one snapshot in a single call and draw the whole vol surface in 3D, by strike or by normalized strike so expiries line up. Fit quality on the Vol Smile pagehttps://optionspace.ai/whats-new.html#dash-smile-qualityhttps://optionspace.ai/whats-new.html#dash-smile-qualityTue, 10 Nov 2026 12:00:00 +0000DashboardsThe Vol Smile page now shows how much of the market each stored fit lands inside, and marks a fit to take care with using the same reason codes as the API. Better fits near the moneyhttps://optionspace.ai/whats-new.html#near-money-fitshttps://optionspace.ai/whats-new.html#near-money-fitsFri, 06 Nov 2026 12:00:00 +0000AccuracyFor symbols with a wide range of strikes and relatively wide bid/ask spreads, smiles now fit the at-the-money quotes more closely. History updated: Selected past snapshots on those symbols. Volume and open interest history completehttps://optionspace.ai/whats-new.html#volume-nov4https://optionspace.ai/whats-new.html#volume-nov4Thu, 05 Nov 2026 12:00:00 +0000CoverageOption volume and open interest history is now complete for every symbol. History updated: Option volume and open interest, a few days. Two theta columns replace the old onehttps://optionspace.ai/whats-new.html#theta-retiredhttps://optionspace.ai/whats-new.html#theta-retiredThu, 05 Nov 2026 12:00:00 +0000API & Python`theta_1d` is the change in an option's value if you hold it to the same time on the next trading day, with the stock price and vol unchanged. `theta_next_open` is the same change up to the next market open. Both are amounts you can use directly, not a rate at one instant: they cover a weekend or holiday when one is ahead, and are never larger than the option's time value. The old `theta` column is no longer returned. Improved fitting method, across the full historyhttps://optionspace.ai/whats-new.html#history-refithttps://optionspace.ai/whats-new.html#history-refitThu, 05 Nov 2026 12:00:00 +0000AccuracyNew fits have used an improved method since 28 October, and every stored fit has now been fitted again with it, so history and new days are consistent. The main improvements: a better schedule for how vol time decays across the trading day, nights and weekends, a faster and more stable pricer, closer fits on same-day and next-day expiries, more reliable forwards and borrow, and corrected dividends. History updated: The full history. A whole term structure in one requesthttps://optionspace.ai/whats-new.html#term-structure-routehttps://optionspace.ai/whats-new.html#term-structure-routeTue, 03 Nov 2026 12:00:00 +0000API & PythonA new lookup returns every expiry's at-the-money vol and forward at one snapshot. Volume and open interest on live screenshttps://optionspace.ai/whats-new.html#live-volumehttps://optionspace.ai/whats-new.html#live-volumeTue, 03 Nov 2026 12:00:00 +0000DashboardsToday's volume and open interest now show on the live screens. One standard for event moveshttps://optionspace.ai/whats-new.html#event-moveshttps://optionspace.ai/whats-new.html#event-movesTue, 03 Nov 2026 12:00:00 +0000API & PythonEvery lookup that reports an event's priced or actual move now uses the same fields. Update to the latest Python package and check the field names in your code. History updated: Event outcome and run-up history. Earnings history correctionshttps://optionspace.ai/whats-new.html#earnings-restoredhttps://optionspace.ai/whats-new.html#earnings-restoredTue, 03 Nov 2026 12:00:00 +0000AccuracyEarnings history was restored for a company that stopped trading, and past reports are now kept. History updated: One company's event history. Error bands on the rate curvehttps://optionspace.ai/whats-new.html#rate-error-bandshttps://optionspace.ai/whats-new.html#rate-error-bandsSat, 31 Oct 2026 12:00:00 +0000DashboardsThe Term Structure page now shows how sure the rate at each expiry is. Empty days now say whyhttps://optionspace.ai/whats-new.html#no-fit-dayshttps://optionspace.ai/whats-new.html#no-fit-daysFri, 30 Oct 2026 12:00:00 +0000API & PythonWhen a market had too few quotes to fit, the API now says so instead of returning nothing. Contract and expiry historieshttps://optionspace.ai/whats-new.html#python-080https://optionspace.ai/whats-new.html#python-080Wed, 28 Oct 2026 12:00:00 +0000API & PythonFollow one listed option or one expiry through time, in the API and the Python package, and see when a fit was held back for quality rather than missing. Live fits for every symbolhttps://optionspace.ai/whats-new.html#live-all-symbolshttps://optionspace.ai/whats-new.html#live-all-symbolsWed, 28 Oct 2026 12:00:00 +0000CoverageLive smiles during the session now cover every symbol, not only the most traded. Faster Earnings Vol tablehttps://optionspace.ai/whats-new.html#earnings-vol-fasterhttps://optionspace.ai/whats-new.html#earnings-vol-fasterWed, 28 Oct 2026 12:00:00 +0000DashboardsThe cross-symbol earnings comparison now opens in about a second. Dashboards and the API show the same fitshttps://optionspace.ai/whats-new.html#dash-withheld-fitshttps://optionspace.ai/whats-new.html#dash-withheld-fitsWed, 28 Oct 2026 12:00:00 +0000DashboardsThe dashboards now leave out any fit our quality checks hold back, as the API does. More robust realized volhttps://optionspace.ai/whats-new.html#rv-spikes-removedhttps://optionspace.ai/whats-new.html#rv-spikes-removedMon, 26 Oct 2026 12:00:00 +0000AccuracyRealized vol is no longer distorted by bad price prints. History updated: Realized vol for a few stocks. Faster smile and term structure pageshttps://optionspace.ai/whats-new.html#dash-whole-dayhttps://optionspace.ai/whats-new.html#dash-whole-dayFri, 23 Oct 2026 12:00:00 +0000DashboardsBoth pages now load a whole day at once, so the slider no longer shows blank snapshots. Event-adjusted realized vol and vol premiumhttps://optionspace.ai/whats-new.html#clean-realized-volhttps://optionspace.ai/whats-new.html#clean-realized-volThu, 22 Oct 2026 12:00:00 +0000New dataRealized vol with scheduled events taken out, and the vol premium measured against it. History updated: Implied against realized vol history. Two fields retired from the APIhttps://optionspace.ai/whats-new.html#retired-fieldshttps://optionspace.ai/whats-new.html#retired-fieldsWed, 21 Oct 2026 12:00:00 +0000API & PythonThe `q_resid` and `callput_gap` fields are no longer returned. If your code reads them, remove those references. One reference pagehttps://optionspace.ai/whats-new.html#referencehttps://optionspace.ai/whats-new.html#referenceWed, 21 Oct 2026 12:00:00 +0000API & PythonA single Reference page lists every Python method, route and field. New lookups for vol premium, events and volumehttps://optionspace.ai/whats-new.html#new-lookupshttps://optionspace.ai/whats-new.html#new-lookupsWed, 21 Oct 2026 12:00:00 +0000New dataImplied against realized vol, event outcomes, event run-ups and volume are now available as lookups, and the chain can include volume and open interest. History follows renamed tickershttps://optionspace.ai/whats-new.html#renamed-tickershttps://optionspace.ai/whats-new.html#renamed-tickersTue, 20 Oct 2026 12:00:00 +0000CoverageA company's history now continues through a ticker change instead of breaking at it. History updated: History of renamed tickers. Python package on Windows, macOS and Linuxhttps://optionspace.ai/whats-new.html#python-071https://optionspace.ai/whats-new.html#python-071Tue, 20 Oct 2026 12:00:00 +0000API & PythonThe package installs the same way on all three, and includes tools that let AI assistants query the data. Historical quotes on every planhttps://optionspace.ai/whats-new.html#quotes-all-planshttps://optionspace.ai/whats-new.html#quotes-all-plansMon, 19 Oct 2026 12:00:00 +0000API & PythonBid, ask and the implied vol of each quote are available on every plan once they become historical. Fit quality on every expiryhttps://optionspace.ai/whats-new.html#fit-qualityhttps://optionspace.ai/whats-new.html#fit-qualityMon, 19 Oct 2026 12:00:00 +0000New dataEvery fitted expiry now reports how much of the market it lands inside, with plain reason codes when it may be less reliable. Volume and open interest on the dashboardshttps://optionspace.ai/whats-new.html#dash-volumehttps://optionspace.ai/whats-new.html#dash-volumeMon, 19 Oct 2026 12:00:00 +0000DashboardsThe options table and the smile view show each contract's volume and open interest for past sessions. Improved realized vol calculationhttps://optionspace.ai/whats-new.html#rv-rebuilthttps://optionspace.ai/whats-new.html#rv-rebuiltSun, 18 Oct 2026 12:00:00 +0000AccuracyRealized vol is now measured from one-minute prices in the regular session. History updated: Realized vol and tenor history. Dividend correctionshttps://optionspace.ai/whats-new.html#dividends-restoredhttps://optionspace.ai/whats-new.html#dividends-restoredSun, 18 Oct 2026 12:00:00 +0000AccuracyMissing dividends were restored for a few stocks, and the affected days were fitted again. History updated: A few stocks, recent days. Faster lookupshttps://optionspace.ai/whats-new.html#fasterhttps://optionspace.ai/whats-new.html#fasterThu, 15 Oct 2026 12:00:00 +0000API & PythonSmiles, chains and surfaces now return several times faster. Clean ATM vol, with an error barhttps://optionspace.ai/whats-new.html#clean-atmhttps://optionspace.ai/whats-new.html#clean-atmWed, 14 Oct 2026 12:00:00 +0000New dataAt-the-money vol with scheduled events taken out, with an error bar on every value. History updated: Clean ATM history. More accurate expiry-day pricinghttps://optionspace.ai/whats-new.html#expiry-dayhttps://optionspace.ai/whats-new.html#expiry-dayTue, 06 Oct 2026 12:00:00 +0000AccuracyDividends that go ex around an expiry are handled correctly, and options are priced for the exercise choices that remain on expiry day. Research calls in the APIhttps://optionspace.ai/whats-new.html#research-callshttps://optionspace.ai/whats-new.html#research-callsFri, 18 Sep 2026 12:00:00 +0000API & PythonAlongside lookups for smiles, chains and histories, the API now answers research questions directly: expiry metrics, exposure distributions, clean ATM history, earnings history and earnings backtests. Historical fit correctionshttps://optionspace.ai/whats-new.html#fit-correctionshttps://optionspace.ai/whats-new.html#fit-correctionsThu, 27 Aug 2026 12:00:00 +0000AccuracyDays that our quality checks flagged were fitted again, and the corrected fits replaced the old ones. History updated: Flagged days across the history.