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What Exchange Colocation Costs Per Month
What exchange colocation costs per month: cabinet, power, cross connects, ports and entitlements, with every figure pinned to a dated public fee schedule.
Market-data research
Strasmore Research
Educational explainers, recurring market-structure breakdowns, and historical deep-dives. Every number is sourced from a stored query against real market data.
Every figure is computed from real US stocks and options market data and stored with the post, so the prose cannot drift from the data.
385 data-backed analyses · 248 evergreen explainers · Updated
- How to Invest in the DAX: Which Index You Get Before you invest in the DAX, check which DAX: the headline index reinvests dividends, the Kursindex does not. Compare ETF, futures and Xetra routes.
- SPY ETF Price in Korean Won: KRW per Share What does one share of SPY cost in Korean won? Work the conversion yourself with today's USD close, your broker's FX spread, and the 22:30 KST clock.
- Event Contracts vs Stock Options Event contracts vs stock options, worked on one matched pair: a YES at 70 cents against the call vertical that costs the same and caps at the same place.
- Partial Assignment of Short Options Partial assignment happens when only some of your short options are exercised. See how the OCC and your broker allocate, and what the leftover stub means.
Learn / market data & trading concepts
All 248Evergreen explainers of how US markets actually work, each concept taught with real, queryable market data.
- What Is an Ex-Dividend Date? How It Works The ex-dividend date decides who gets paid: buy before it and the dividend is yours, buy on it and it isn't. See the four key dates on real US timelines.
- The Option Greeks Explained: Delta to Rho Delta, gamma, theta, vega and rho, the five option greeks, demonstrated by tracing one real SPY call through its whole life against the stock.
- What Is VWAP? Volume-Weighted Average Price VWAP stands for volume-weighted average price. Definition: price times volume divided by total volume, reset daily. What it means on a real trading day.
- What Is a Bid-Ask Spread? Real Costs Learn what a bid-ask spread is, how to calculate it, and what it costs per trade, with real spreads measured from tick-level quote data on US stocks.
- What Is RVOL (Relative Volume)? How to Read It RVOL (relative volume) is a stock's volume ÷ its 20-day average: above 1 is busier-than-usual trading. Plus intraday time-of-day RVOL and what counts as high.
- What Is the Closing Auction? (Closing Cross) What the closing auction is, why one 4 p.m. print sets the official close, and how market-on-close orders feed the day's biggest trade, on real tape data.
- How Do Market Makers Make Money? The Spread What market makers do and how they earn the bid-ask spread, with real tick data: measured spreads, quote updates per second, and the SQL behind every number.
- Short Interest vs Short Volume: The Difference Short interest and daily short volume measure different things. See real per-ticker numbers, days-to-cover math, and the exact query behind every figure.
- What Is the 2s10s Spread? Yield Curve Data What the 2s10s spread is, how the Treasury yield curve works, and what past inversions looked like, with every chart built from auditable market data.
- Stock Market Holidays 2026–2027: NYSE & Nasdaq When is the stock market closed? Every upcoming NYSE & Nasdaq holiday and 1:00 p.m. early close for 2026–2027, from the live exchange calendar.
More guides
- Free Stock API With curl and jq: No Key
- ASX Options Expiry and Settlement Explained
- PEP Dividend 2026: Ex-Dates and the Raise
- JNJ Dividend 2026: Dates, Raise and Yield
- SPY Dividends for Korean Investors
- ES Futures Trading Hours and the Daily Break
- Is the US Market Open on Japanese Holidays?
- Buying Puts vs Buying Calls: Why Puts Cost More
- VZ Dividend 2026: Dates, Payout and Yield
- US Stock Market Hours in UAE Time (GST)
- PFE Dividend 2026: Ex-Dates and Payments
- How DAX Index Weights Are Calculated
- Recent Reverse Stock Splits: Last 90 Days
- How Exchange Speed Bumps Work
- How Often Mutual Funds Change Holdings
- Iron Condor Screener from the SQL API
- Micro E-mini vs E-mini Futures: Specs & Cost
- How Many Puts to Hedge a Portfolio: Formula
- Why Only Some Stocks Have Daily Options
- AAPL Dividend 2026: Dates and Amounts
- Can You Buy a Put Without Owning Stock?
- Mutual Fund Exchange vs Selling and Rebuying
- Tradegate vs Xetra: Hours and Prices
- Why Overnight Orders Must Be Limit Orders
- What Is the TTM Squeeze? Formula and Limits
- SPLG Is Now SPYM: What Changed for Holders
- What Happens When an ETF Closes
- FINRA Short Volume Ratio by Ticker
- Does an Expired Option Count as a Day Trade?
- Substitute Payments and Your 1099
- Overnight Trading Order Types: Limit Only
- Mutual Fund Cutoffs on Early-Close Days
- US Market Hours in German Time (CET/CEST)
- When Do Index Funds Trade? ETFs vs Mutual Funds
- What Stocks Are in the DAX 40?
- How VIX Settlement Works: the SOQ
- RSP vs SPY: Equal Weight S&P 500
- Has SPY Ever Split? The ETF Split Record
- Accenture (ACN) Dividend History and Raises
- Honeywell (HON) Dividend History by Year
- The 10:00 AM Rule in Stocks, Tested
- Relative Volume Screener in SQL: Free API
- XOM Dividend Increase History: Every Raise
- US Stock Market Hours in Singapore Time
- The $100,000 Rule for Stock Options (ISOs)
- Stocks With the Highest Option Premiums
- Mutual Fund Order Cutoff Times by Broker
- How QQQ Holdings Are Weighted, and Capped
- Ex-Dividend Date: Open Orders and Premarket
- Crypto Covered Call ETFs: Yield Explained
- US Stock Market Hours in Mountain Time
- How Much Does One Share of Stock Cost?
- Weekly Dividend ETFs: How the Payouts Work
- Stock Splits in Japan and the 100-Share Unit
- Mutual Fund Forward Pricing Rule Explained
- Ex-Dividend Dates on the ASX: Rules & Timing
- What Does Historical Tick Data Cost?
- Why Open Interest Updates Only Once a Day
- KRX After-Hours Trading: Korea's Sessions
- When Do SPX Options Stop Trading?
- Stock Split Calendar From a Free SQL API
- Do Mutual Funds Trade on Market Holidays?
- Covered Call Screener: Build One in SQL
- DAX Futures Explained: FDAX, FDXM, FDXS
- Stock Splits in India: Face Value Explained
- Ex-Dividend Calendar from a Free SQL API
- Covered Calls on Futures: How They Work
- Can You Use a Limit Order on a Mutual Fund?
- Can German Retail Investors Short Stocks?
- After-Hours Trading on Holidays and Weekends
- Eurex Option Codes: ODAX, ODAP, OESX
- Do Mutual Funds Trade in the Primary Market?
- Is Cross Trading Legal? Rules by Venue
- US Stock Market Hours in London Time (BST/GMT)
- SPX Options vs ES Futures Options: Which to Use
- MSFT Dividend 2026: Dates, Raise, Per Share
- How Pre-IPO Shares Trade Before the Ticker
- Best Stocks for Day Trading Options (Ranked)
- How Treasury Buybacks Work (and Why Not QE)
- What Is a Liquidity Sweep in Trading?
- EURO STOXX 50 Daily Options (OEXP) Explained
- NYSE Closing Auction Explained: How It Works
- Risk Reversal Options: Sell a Put, Buy a Call
- What Is a Liquidity Heatmap? How to Read One
- US Stock Market Hours in Sydney Time
- Upcoming Reverse Stock Splits: Live Calendar
- Stock Repair Strategy: A Real NKE Example
- Can You Cancel a Mutual Fund Order? 4 pm Cutoff
- Can You Make $1,000 a Day Day Trading?
- How to Download FINRA Daily Short Volume Data
- What Are Tokenized Stocks? Rights & Settlement
- Nasdaq Opening Cross Explained: 4 a.m. to 9:30
- The September Effect: Is It Real? SPY Data
- Market-Wide Circuit Breakers Explained
- How Long Can a Stock Trade Under $1? The Rules
- Free Stock Market Data API in Python
- Where to Find Options Trade Data (OPRA Prints)
- Are 0DTE Options High Risk? What the Greeks Say
- How Much Money Do You Need to Trade Options?
- What Is the CME CVOL Index? CVOL vs VIX
- TWAP vs VWAP vs POV Orders Explained
- What Does Cross Mean in Trading? 4 Meanings
- What Is the 3m10y Spread? The Fed's Yield Curve
- Santa Claus Rally: Hit Rate and Returns by Year
- Buy on the Ex-Dividend Date: Do You Get Paid?
- The 390 Rule in Options: Professional Status
- The 7-5-3-1 Rule in Mutual Funds, Tested
- How to Store Market Data PCAPs: Split, Compress
- Nasdaq Closing Cross Explained: NOII and MOC
- When Do VIX Options Expire? The Wednesday Rule
- How to Get Approved for Options Trading
- Why Relative Volume Differs Between Platforms
- What Is a High VIX? Levels and Extremes
- Short Delivery Auction in India: NSE Rules
- Dividend Increases Expected This Month
- Futures Tick Size and Tick Value Explained
- Xetra Trading Hours and Holidays 2026–2027
- How to Backtest a Trading Strategy in Python
- What Is Backtesting in Trading?
- Options Expiry Days in India: NSE and BSE
- Can You Day Trade an Index Fund? ETFs vs Funds
- Short Selling Bans Explained: US, Germany, EU
- How to Read the US Equity Trade Tape
- US Stocks 23/5 Trading: The December 2026 Plan
- What Replaced the PDT Rule? Intraday Margin
- How to Short a Stock, Step by Step
- NDX vs QQQ Options: Which One to Trade?
- Can a Death Cross Be Bullish? The SPY Record
- Short Positions in German Stocks: Bundesanzeiger
- What Happens After a Reverse Stock Split?
- Altria (MO) Dividend Increase History by Year
- The 7% Sell Rule Explained: O'Neil's Stop-Loss
- Fed Call vs House Call vs Exchange Call
- Single Stock Futures: CME's New Contracts
- How an IPO's Opening Price Is Set
- Biggest Short Squeezes in History, Ranked
- What Is an Implied Volatility Index? IV30 & VIX
- Which Stocks Have Weekly Options? How to Tell
- How Long Can You Hold a Short Position?
- Stop Orders on Options: What Actually Triggers
- When Do Options Start Trading After an IPO?
- Implied Volatility vs Beta: What Each Tells You
- Futures Block Trades and CME Minimums
- What Time Do Options Start Trading?
- Option Expiration Cycles Explained
- Apple Stock Split History and Ratios
- Monthly Dividend ETFs: Who Actually Pays
- How to Become a Registered Market Maker
- Why stocks drop on the ex-dividend date
- Street Name vs Holder of Record: Cede & Co
- Who Sets the Ex-Dividend Date? Not the Board
- Who Are the Biggest Market Makers?
- Due Bills and Stock Splits: Ex-Date Timing
- When Did the US Stock Market Start? 1792
- Qualified Dividend Holding Period: 61 Days
- Stop Order vs Stop-Limit Order: How Each Fills
- Payment in Lieu of Dividends, Explained
- Options Expiration Calendar 2026: All 12 Dates
- FINRA Margin Debt Statistics, Explained
- When Are 13F Filings Due? 2026 Deadlines
- What H1 and H2 Mean in Company Reporting
- Why Stock Quotes Are Delayed 15 Minutes
- How to Calculate Covered Call Returns
- What Is the High-Low Index? Market Breadth
- When Is the COT Report Released?
- US Market Hours and Daylight Saving Time
- What Happens If an Option Expires In the Money
- How to Find a Stock's Earnings Date
- Price Return vs Total Return: The Real Gap
- How to Find a Lockup Expiration Date
- Nikkei 225 Options and SQ Settlement
- Trailing vs Forward Dividend Yield Explained
- Mutual Funds vs ETFs: What Actually Differs
- When Do Mutual Fund Trades Settle?
- What Is Max Pain in Options? The Real Math
- Covered Call vs Cash-Secured Put
- US Stock Market Hours Around the World
- American vs European Options Explained
- Free Stock Market Data API, No Key Required
- Free SQL API for Stock Market Data
- What Is IV Crush? Measured on Real Earnings
- Triple Witching 2026 Dates and Volume Data
- Which Stocks Have Daily Options?
- When Is Short Interest Released?
- How Often Do Stocks Split?
- Highest Days to Cover Stocks Right Now
- How Ex-Dividend Dates Affect Options
- Does a Stock Go Up After a Split?
- What Is a Special Dividend? (With Examples)
- How Leveraged ETFs Work (and Why They Decay)
- What Is Option Vega? Volatility Sensitivity
- What Is Implied Volatility? IV, Explained
- What Is Option Theta? Time Decay Explained
- What Is Option Gamma? Delta's Accelerator
- What Is Option Delta? A Plain-English Guide
- Most Shorted Stocks Right Now, Measured
- Unusual Volume Stocks This Week, Measured
- Is the Stock Market Open Today?
- When Do Mutual Funds Trade? NAV Pricing at 4 pm
- When Do 0DTE Options Trade? By the Hour
- What Is Average Daily Volume (ADV)?
- IPO Lockup Expiration: Meaning & Release Date
- FINRA Short Interest Data, Explained
- What Is Triple Witching? Volume & Volatility
- What Is Dividend Yield? What's Normal in 2026
- What Is a Short Squeeze? GameStop, Measured
- Upcoming Ex-Dividend Dates: Stocks This Week
- What Is the Put-Call Ratio? A Data Guide
- DTE Meaning in Options: Days to Expiration
- When Do Options Expire? Friday 4 PM ET & Daily
- Why Do Stocks Gap Up or Down Overnight?
- What Is Days to Cover? Short Interest Ratio
- What Is a Stock Split? Ratios and Mechanics
- Market Order vs Limit Order, Measured
- How Monthly Stock Returns Are Measured
- How Much Does It Cost to Trade Options?
- Stock Market Hours: Open 9:30, Close 4:00 ET
- Why Are Spreads Wider at the Open? Real Data
- What It Costs to Trade a Stock, Measured
- What Is the NBBO? National Best Bid and Offer
- What Is FINRA Short Interest? Days to Cover
- What Is a Reverse Stock Split? Good or Bad?
- Ex-Dividend Date vs. Record Date: Same Day?
- Locked and Crossed Markets, Explained With Data
- How Big Is the OPRA Options Quote Feed?
- Options Volume vs. Open Interest, Explained
- What Is 0DTE? Zero Days to Expiry Options
- What Is the Opening Auction? How Stocks Open
- What Is Dark Pool Trading? FINRA Volume Data
- Stock Float vs. Shares Outstanding Explained
- What Is a Block Trade? Big Prints & the Data
- Premarket and After-Hours Trading Hours (ET)
- The Most Common SEC Filings, Explained by Data
- Why Short Interest Data Is Always Two Weeks Old
Deep Dives / forensic investigations
All 63Forensic, single-subject investigations into individual stocks, events, and market-structure quirks.
- Self-Help Declarations Under Reg NMS Rule 611 Self-help declarations let one venue route around another's broken quote under Reg NMS. What changes for ISOs, and why the tape can print an impossible NBBO.
- Mass Cancels and Purge Ports Explained How fast can a market maker pull every quote? Inside mass cancel messages, dedicated purge ports, cancel on disconnect, and the gateway queue in the way.
- Warren Buffett's Index Put Trade Explained Warren Buffett's index put trade in full: the four indexes, the $4.9bn premium, the collateral terms, and the accounting that swung earnings by billions.
Market Recaps / period-by-period reviews
All 74What actually happened, period by period: daily, weekly, monthly, and beyond, in the numbers.
- Market Recap: July 30, 2026, The Day in Numbers July 30, 2026, measured from the tape: index scoreboard, breadth, sector spread, options flow, the quote tape, rates and calendar, every figure query-backed.
- Market Recap: July 29, 2026, The Day in Numbers July 29, 2026, measured from the tape: index scoreboard, breadth, sector spread, options flow, the quote tape, rates and calendar, every figure query-backed.
- Market Recap: Week of July 20, 2026 The week after July's monthly options expiration, measured: the index scoreboard, sector dispersion, weekly breadth, and where the tape's dollars went.