<p>Pin risk happens when an option's strike price is very close to the stock’s market price at expiration; or right at the money (ATM). This creates uncertainty for both option buyers and sellers, because it’s unclear due to the proximity to the underlying whether the option will be exercised or expire worthless. For option sellers, this can be risky—especially if they have a short position—since unexpected exercise could lead to unwanted stock assignments after the market closes. For example, if $SPY is trading at $610 per share, and a trader is short the $610 call near expiration, the trader experiences pin risk because it's unclear whether $SPY will close above or below $610 per share</p>

A definition of pin risk and how it pertains to an option's expiration

Pin Risk (Options Expiration)

Trade Codes

The bid/ask spread and how it affects options buyers and sellers

Descending Fills

Ascending Fills

How to Harness Unusual Whales Screeners for Faster, Smarter Trade Ideas

Open Interest Change Feed Breakdown

13F filings: what are they, who needs to file, and what can be gleaned? 

Options Strategies for High Volatility

Breaking Down Flow Alerts

More Unusual Trading Before Trump's China tariff Pause, IT HAPPENED AGAIN. Flow Review 5/12/2025

Options Screener Breakdown

How To Use Top Net Impact And Market Tide Together For Market Sentiment With The Server-Level Discord Bot

Use Avg 1D RV Post Earnings In Market Map To Instantly Find Trade Ideas

Spot Hidden Trading Opportunities By Using The Market Map To Find Extreme Conditions

How To Check Your API Usage

The Discord options_screener Command Step-by-Step and How To Spot Institutional Option Trades With It

How to Plot the 0DTE Straddle Breakeven Prices on Your Periscope Chart and Why You Should Care

Earnings Date Differences Explained: Gaining Confidence in Your Unusual Whales Data

Delta Airlines $DAL Unusual Options Activity Lookback

What is the ETF Overview?

How to Fix 404 Errors when Using AI Tools with the Unusual Whales API

Theoretical Value

Book Value

Market Capitalization (Market Cap)

Mutual Fund

Par Value

Volatility Index (VIX)

Price-to-Earnings Ratio

Yield Curve

Value Stock

Treasury Note (T-Note)

Treasury Bond (T-Bond)

Treasury Bill (T-Bill)

Stock Split

Short Selling

Short Interest

Risk Tolerance

Revenue

Recession

Synthetic Short

Synthetic Long

Synthetic Position

Over-the-Counter (OTC) Market

Money Market Fund (MMF)

Stop Order

Market Order

Limit Order

Interest Rate Risk

Periscope FAQ

How To Interpret Periscope Net Gamma Exposure

Quick Custom Alert Presets

Institutional Investor

Retail Investor

IPO (Initial Public Offering)

Hedge Fund

Growth Stock

Futures Contract

Fundamental Analysis

Technical Analysis

Float

Short Squeeze

Flow Review February 12, 2025: Unusual Activity on $KWEB and a Follow Up Trade

Flow Review June 15, 2024: How we used Unusual Whales to know when Roaring Kitty exited his GameStop, $GME calls

Flow Review June 5, 2024: A Breakdown of Roaring Kitty's GameStop $GME options activity, and how we tracked it

Flow Review January 30, 2025: Identifying Put Writes with $AMZN and tracking Unusual Options Activity in $CLS

Flow Review September 4, 2024: Super Micro Computer, $SMCI, and its unusual trading days before major news event

Flow Review September 11, 2024: PLTR and DELL join the S&P500, a look back at their options activity beforehand

Flow Review September 2024: Unusual Shorting Flow and how to Spot PUT Writing with $CRWD

Flow Review November 2024: Trading around Crypto stock $CLSK around Trump's Election

Flow Review November 2024: Unusual Options Activity around Microsoft $MSFT and $AI news

Probability of Profit (POP)

Flow Review $COF August, 2024: Following a $COF trader using Historical Flow

Flow Review $SMCI, October 2024: Walking through SMCI Unusual Flow

Flow Review $TIGR, $PDD, $BABA October 2024: Breaking down Unusual Options Flow in Chinese Stocks, and how Options helped push the Chinese stock market frenzy