BigShort Lexicon
0-9
0DTE (Zero Days To Expiration)
Also known as: Same Day Expiration
Options contracts that expire on the current trading day; highly volatile and time-sensitive.
Related: DTE, 7DTE, Premium, GEX
7DTE (Seven Days To Expiration)
Also known as: Weekly Expiration
Options contracts expiring within seven days; commonly used for short-term GEX analysis.
Related: DTE, 0DTE, GEX, Premium
A
ATR (Average True Range)
A technical indicator measuring market volatility by analyzing the range between high and low prices over a specified period.
Related: Volatility, Price Action
B
Bearish
Also known as: Downward / Negative Sentiment
Expecting or indicating a downward price movement; negative market sentiment.
Related: Bullish, Puts, Resistance, Bronze Sweep
Bronze Sweep
Also known as: Bearish Sweep
A large, unusual option transaction analyzed as bearish by BigShort's proprietary algorithms.
Related: Golden Sweep, UO, NOF, OptionFlow
Bullish
Also known as: Upward / Positive Sentiment
Expecting or indicating an upward price movement; positive market sentiment.
Related: Bearish, Calls, Support, Golden Sweep
C
Call Wall
Also known as: Call HP / Green Line
The strike price with maximum call gamma (green line in GEX); acts as resistance where dealer selling pressure increases.
Related: Put Wall, GEX, HP, Resistance, Gamma
Calls
Also known as: Call Options
Options contracts giving the buyer the right to purchase the underlying asset at a specified strike price before expiration.
Related: Puts, Premium, Strike Price, NOF, Bullish
Candlestick
Also known as: Candle / Bar
A chart element showing open, high, low, and close prices for a specific time period.
Related: OHLCV, Price Action
ChartGame
A free online simulator (ChartGame.com) that helps traders practice decision-making using historical charts without risking real capital.
Related: Price Action, ORB, Support, Resistance
Confluence
Also known as: Alignment / Confirmation
When multiple indicators or signals align to support the same directional bias, increasing the probability of a successful trade.
Related: NOF, Dark Pools, MomoFlow, GEX, Price Action
D
Dark Pools
See: DP
Private trading venues where large institutions execute orders away from public exchanges to minimize market impact.
Related: DP, DarkFlow, Support, Resistance
DarkFlow
A ranked discovery tool showing tickers with the most significant current Dark Pool activity across the market.
Related: DP, Dark Pools, Volume
Delta
An option Greek measuring how much an option's price changes for every $1 move in the underlying stock; indicates directional exposure.
Related: Gamma, Greeks, GEX, Premium
Derivatives
Financial instruments whose value is derived from an underlying asset, such as options, futures, or swaps.
Related: Calls, Puts, Spot Market
DIA (Dow Jones ETF)
Also known as: Dow ETF
An exchange-traded fund that tracks the Dow Jones Industrial Average.
Related: SPY, QQQ, ETF, UF Chart
DP (Dark Pool)
Also known as: Dark Prints
Private trading venues where large institutions execute orders away from public exchanges to minimize market impact; individual prints are called Dark Prints.
Related: DarkFlow, Support, Resistance, Confluence
DTE (Days To Expiration)
Also known as: Time to Expiration
The number of calendar days remaining until an option contract expires.
Related: Premium, Greeks, 0DTE, 7DTE
Dumb Money
Also known as: Retail / Momo Traders / Momentum
Emotional or reactionary traders; typically retail investors and discretionary institutional players making aggressive buys/sells.
Related: MomoFlow, Shadow Bars, Smart Money
E
ETF (Exchange Traded Fund)
A marketable security that tracks an index, commodity, bonds, or basket of assets.
Related: SPY, QQQ, DIA, Spot Market
Exhaustion
Also known as: Flow Exhaustion / Overextension
A condition where sustained flow in one direction becomes overextended, often leading to a sharp reversal when the dominant side "tires out".
Related: MomoFlow, NOF
F
FastFlow
See: FF
Algorithmic trading flow from market makers, institutions, and HFT; fast, calculated, formula-based moves not driven by emotion.
Related: MomoFlow, Order Flow, HFT, Smart Money
FF (FastFlow)
Also known as: FastFlow
Shorthand for the FastFlow indicator, which shows algorithmic trading activity from market makers and institutions. In BigShort v1, FF also referred to the FF Segregated page, which has been retired — today FastFlow is drawn on the main chart (⚙️ Settings → Core Flow).
Related: MomoFlow, Order Flow, HFT
G
Gamma
An option Greek measuring the rate of change of delta; highest for at-the-money options near expiration, critical for dealer hedging flows.
Related: Delta, Greeks, GEX, Market Makers
GEX (Gamma Exposure)
Net changes to delta exposure across the market, plotting critical price levels where dealer hedging creates dynamic support and resistance zones.
Related: Gamma, Delta, Call Wall, Put Wall, Zero Gamma Flip, HP
Golden Sweep
Also known as: Bullish Sweep
A large, unusual option transaction analyzed as bullish by BigShort's proprietary algorithms.
Related: Bronze Sweep, UO, NOF, OptionFlow
Greeks (The)
Also known as: Option Greeks
Mathematical calculations (Delta, Gamma, Theta, Vega, Rho) used to assess option pricing and risk exposure.
Related: Delta, Gamma, Premium, Volatility
H
HBD (Honey Badger Day)
Also known as: Badgerish Day
A rare, high-probability setup (up to 90% for 3-HBD) that typically shows early morning weakness followed by a late-day rally in SPY, indicated by the Squeeze Meter.
Related: Squeeze Meter, UF Chart, NOF, Short Squeeze
Hedge/Hedging
Taking offsetting positions to reduce risk exposure; market makers hedge to maintain neutral positions as prices move.
Related: Market Makers, Delta, Gamma, HP
HFT (High-Frequency Trading)
Also known as: Algo Trading
Automated trading strategies that execute orders in milliseconds using algorithms.
Related: FastFlow, Market Makers, Order Flow
Honey Badger Day
See: HBD
A high-probability SPY setup signaled by the Squeeze Meter reaching 3-HBD or higher.
Related: HBD, Squeeze Meter, Short Squeeze
HP (Hedge Pressure)
Price levels where market maker hedging activity creates support or resistance.
Related: GEX, Market Makers, Support, Resistance
I
Implied Volatility
Also known as: IV
The market's forecast of likely movement in an asset's price; higher IV means more expensive options.
Related: Volatility, Premium, Skew, Greeks
Inverse Indicator
Also known as: Contrarian Signal
An indicator where the typical interpretation is reversed; high values suggest opposite price movement.
Related: MomoFlow, Shadow Bars, Dumb Money
M
MA (Moving Average)
A lagging indicator that averages price data over a specified time period to smooth out fluctuations.
Related: OHLCV, RSI, Price Action
Manipulation
See: MMPD
Advanced indicator showing potential manipulative trading activity by market makers (⚙️ Settings → Core Flow, on both the main chart and the UF Chart).
Related: MMPD, FastFlow, Market Makers
Market Makers
Also known as: MM / Dealers
Financial firms that provide liquidity by continuously quoting buy and sell prices; must hedge their positions as markets move.
Related: Hedging, GEX, Gamma, Delta, HP
Martian NOF
Also known as: Martian Net Option Flow
A variant of Net Option Flow that excludes unusual option premiums, focusing only on regular market activity for clearer sentiment reading.
Related: NOF, NOFA
MMPD (Market Maker Price Discovery)
Also known as: MM Price Discovery
Advanced indicator tracking market maker positioning and manipulative activity (Elite feature).
Related: Manipulation, FastFlow, Market Makers
Momo
See: MomoFlow
Short for Momentum Flow or Momentum Traders.
Related: MomoFlow, Shadow Bars, Dumb Money
Momo Mondays
A phenomenon where SPY tends to follow MomoFlow direction on Mondays rather than acting as an inverse indicator.
Related: MomoFlow, HBD, SPY
MomoFlow
Also known as: Momentum Flow / Shadow Bars
Momentum Flow - tracks emotional and discretionary trading from retail and "dumb money"; often acts as an inverse indicator.
Related: Shadow Bars, FastFlow, Order Flow, Inverse Indicator
N
Net Option Flow
See: NOF
Dollar-weighted net premium showing directional bias in options activity.
Related: NOF, NOFA, Calls, Puts
NOF (Net Option Flow)
Dollar-weighted net premium of all call and put buying and selling activity; differentiates buys from sells.
Related: NOFA, Martian NOF, OptionFlow, Unusual Premium
NOFA (Net Option Flow Accumulation)
Also known as: NOF Accumulation / Green Line
The running daily tally of net premium flows; tracks cumulative directional sentiment throughout the trading day.
Related: NOF, Martian NOF, Calls, Puts
O
OHLCV (Open High Low Close Volume)
The five basic data points that most brokers provide for each trading period.
Related: Candlestick, Price Action, Volume
OptionFlow
A tab/feature showing large and unusual option activity for any ticker with sentiment analysis (bullish/bearish/neutral).
Related: NOF, UO, Golden Sweep, Bronze Sweep
ORB (Opening Range Breakout)
A trading strategy based on price breaking above or below the range established in the first period of trading.
Related: Price Action, Support, Resistance
Order Flow
All market, limit, and stop orders being placed, cancelled, or filled; the real-time buying and selling activity moving prices.
Related: FastFlow, MomoFlow
P
Power Hour
Also known as: Final Hour
The last hour of the trading day when institutional activity often distorts typical patterns; requires cautious interpretation.
Related: OptionFlow, Volume
Premium
Also known as: Option Premium
The price paid for an option contract; reflects time value, intrinsic value, and implied volatility.
Related: Calls, Puts, NOF, UO, Greeks
Price Action
Also known as: PA
The movement of price over time; the foundation of technical analysis showing real-time supply and demand dynamics.
Related: Candlestick, Support, Resistance, ORB
Put Wall
Also known as: Put HP / Red Line
The strike price with maximum put gamma (red line in GEX); acts as support where dealer buying pressure increases.
Related: Call Wall, GEX, HP, Support, Gamma
Puts
Also known as: Put Options
Options contracts giving the buyer the right to sell the underlying asset at a specified strike price before expiration.
Related: Calls, Premium, Strike Price, NOF, Bearish
Q
QQQ (Nasdaq 100 ETF)
Also known as: Nasdaq ETF / Triple Q
An exchange-traded fund that tracks the Nasdaq-100 Index, heavily weighted toward technology stocks.
Related: SPY, DIA, ETF, UF Chart
R
Resistance
A price level where selling pressure historically prevents further upward movement.
Related: Support, Price Action, Dark Pools, Call Wall
RSI (Relative Strength Index)
A momentum oscillator measuring the speed and magnitude of recent price changes to identify overbought or oversold conditions.
Related: MA, ATR, Price Action, OHLCV
S
SE (Short Exempt)
A designation allowing short sales to bypass the uptick rule and short sale restrictions (SSR).
Related: SSR, Short Squeeze, Market Makers
Seasonality
Historical performance patterns based on calendar date or day of week; a weaker force used to add context to stronger indicators.
Related: Price Action, Confluence
Shadow Bars
Also known as: Momo Bars
Gray bars in the MomoFlow chart showing momentum-driven buying (up) or selling (down); often acts as inverse indicator for SPY.
Related: MomoFlow, Inverse Indicator, Dumb Money
Short Squeeze
Also known as: Squeeze
Rapid price increase forcing short sellers to buy back shares to cover positions; creates additional buying pressure.
Related: SE, SSR, Squeeze Meter, HBD
SimSearch
Also known as: Similarity Search
Analyzes historical data to identify the 5 days most similar to current intraday patterns for predictive insights.
Related: UF Chart, Price Action
Skew
Also known as: Options Skew
An options metric showing the difference in implied volatility between puts and calls; indicates market sentiment (Elite feature).
Related: Implied Volatility, Greeks, Premium
Smart Money
Institutional traders, algorithms, and sophisticated market participants who trade based on analysis rather than emotion.
Related: FastFlow, Market Makers, HFT, Dumb Money
Spot Market
Also known as: Cash Market / Equities
The market for immediate delivery of an asset (stocks/equities) as opposed to derivatives like options or futures.
Related: Derivatives, ETF, Underlying
Spodin
Also known as: Spear of Odin
BigShort's proprietary closed-system alert tool for setting private price alerts via call or text, protecting from market maker exploitation.
Related: Market Makers
SPY (S&P 500 ETF)
Also known as: S&P ETF / Spider
An exchange-traded fund that tracks the S&P 500 Index, the most widely followed equity index.
Related: QQQ, DIA, ETF, UF Chart, HBD
Squeeze Meter
Proprietary analysis of SPY UF data measuring short pressure in the market; signals Honey Badger Days when shorting is excessive. It has its own tab (app.bigshort.com/squeeze-meter), scored daily on a scale from INVERSE HBD and NEUTRAL through 1-BADGERISH, 2-WEAK HBD, 3-HBD, 4-STRONG HBD, and 5-GODLY HBD.
Related: HBD, Short Squeeze, UF, SE
SSR (Short Sale Restriction)
Also known as: Uptick Rule
A rule requiring shorts to only occur on an uptick (when stock trades above last sale price), typically triggered after a 10% intraday decline.
Related: SE, Short Squeeze, Market Makers
Strike Price
Also known as: Strike
The predetermined price at which an option can be exercised (bought or sold).
Related: Calls, Puts, Premium, GEX
Support
A price level where buying pressure historically prevents further downward movement.
Related: Resistance, Price Action, Dark Pools, Put Wall
Sweeps
Urgent multi-exchange option orders indicating strong directional conviction; categorized as Golden (bullish) or Bronze (bearish).
Related: Golden Sweep, Bronze Sweep, UO, OptionFlow
U
UF (UltraFlow)
Aggregated flow data from all constituent tickers within an index rather than the index ETF itself. Viewed on the UF Chart (app.bigshort.com/uf/UFSPY), which was called the UltraFlow tab in the v1 interface.
Related: SPY, QQQ, DIA, SimSearch, Squeeze Meter
UltraFlow
See: UF
The v1-era name for what is now the UF Chart. UltraFlow was the tab's name in the v1 interface; the same aggregated index-constituent data now lives on the UF Chart (app.bigshort.com/uf/UFSPY).
Related: UF, SimSearch, Squeeze Meter, ETF
Underlying
Also known as: Underlying Asset
The stock or security that an option or derivative contract is based upon.
Related: Spot Market, Derivatives, Calls, Puts
UO (Unusual Options)
Also known as: Unusual Premium
Large option trades (typically over $1M in premium) including sweeps, blocks, and splits that indicate institutional activity.
Related: NOF, Golden Sweep, Bronze Sweep, OptionFlow
Unusual Premium
See: UO
Large option trades indicating institutional activity and strong conviction.
Related: UO, NOF, Golden Sweep, Bronze Sweep
V
Volatility
Also known as: Vol
The rate and magnitude of price changes; higher volatility means larger and faster price swings.
Related: Implied Volatility, ATR, GEX, Zero Gamma Flip
Volume
The total number of shares or contracts traded during a specific period.
Related: OHLCV, Order Flow, Dark Pools
Z
Zero Gamma Flip
Also known as: Zero HP / Turquoise Line
The price level (turquoise line) where gamma exposure changes from positive to negative; above = muted volatility, below = amplified volatility.
Related: GEX, Gamma, Call Wall, Put Wall, Volatility