Tickers

Sports Ticker Format

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Overview

Sports prediction market tickers follow a hierarchical structure designed to be:

• Hierarchical - Event tickers group related contracts
• Sortable - Alphabetical sorting clusters all markets for a game
• Parseable - Deterministic structure enables programmatic parsing
• Human-readable - Encodes game, market type, and position in a compact format

Sports are organized into two categories based on ticker format:

Category	Sports	Structure
Team Sports	NBA, NFL, NHL, MLB, EPL, NCAAM	Home vs Away matchup format
Individual Sports	Golf, Formula 1	Tournament/race with N competitors

Ticker Hierarchy

Level	Description	Team Sports Example	Individual Sports Example
Event Ticker	Identifies a specific market	GEMI-NBA-2602121800-HOU-DAL-S	GEMI-GOLF-MAS-WIN-20260412
Contract Ticker	Identifies a position within that market	DAL6	SCHEFFLER
Full Ticker	Event + Contract combined	GEMI-NBA-2602121800-HOU-DAL-S-DAL6	GEMI-GOLF-MAS-WIN-20260412-SCHEFFLER

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Team Sports

Event Ticker Format

Structure

Code
 
GEMI-{LEAGUE}-{YYMMDD}{HHMM}-{AWAY}-{HOME}-{TYPE}

Components

Component	Length	Format	Description
GEMI	4	literal	Gemini prediction market prefix
LEAGUE	2-6	[A-Z]+	League identifier
YYMMDD	6	[0-9]{6}	Game date (UTC)
HHMM	4	[0-9]{4}	Game time in 24hr (UTC)
AWAY	2-4	[A-Z]+	Away team abbreviation
HOME	2-4	[A-Z]+	Home team abbreviation
TYPE	1-7	[A-Z]{1,7}	Market type code

Regex Pattern

Code
 
^GEMI-([A-Z]{2,6})-(\d{6})(\d{4})-([A-Z]{2,4})-([A-Z]{2,4})-([A-Z]{1,7})$

Capture Groups:

1. League
2. Date (YYMMDD)
3. Time (HHMM)
4. Away team
5. Home team
6. Market type

Supported Team Sports Leagues

League	Code	Teams	Abbreviation Length
NBA	NBA	30	3
NFL	NFL	32	2-3
NCAA Men's Basketball	NCAAM	350+	2-4
NCAA Women's Basketball	NCAAW	350+	2-4
NCAA Football	NCAAF	130+	2-4
NHL	NHL	32	2-3
MLB	MLB	30	2-3
English Premier League	EPL	20	3-4

Market Types

Standard Markets

Type	Code	Description	Contract Format
Moneyline	M	Winner of the game	{TEAM}
Spread	S	Point spread	{TEAM}{LINE}
Total	T	Combined score over/under	O{LINE} or U{LINE}
Team Total	TT	Single team score over/under	{TEAM}O{LINE} or {TEAM}U{LINE}

Player Props

Player prop market types follow the PP{STAT} pattern. Player identifiers use uppercase short names (typically last name, e.g., LUKA, MAHOMES).

Contract Format: {PLAYER}O{LINE} or {PLAYER}U{LINE}

Basketball

Type	Code	Description
Points	PPPTS	Player points over/under
Rebounds	PPREB	Player rebounds over/under
Assists	PPAST	Player assists over/under
3-Pointers Made	PP3PM	Player 3-pointers made over/under
Steals	PPSTL	Player steals over/under
Blocks	PPBLK	Player blocks over/under
Pts + Reb + Ast	PPPRA	Player points + rebounds + assists over/under

Football

Type	Code	Description
Touchdowns	PPTD	Player touchdowns over/under
Passing Yards	PPYDS	Player passing yards over/under
Rushing Yards	PPRYDS	Player rushing yards over/under
Receiving Yards	PPRECY	Player receiving yards over/under
Receptions	PPREC	Player receptions over/under
Completions	PPCOMP	Player completions over/under

Baseball

Type	Code	Description
Strikeouts	PPSO	Pitcher strikeouts over/under
Hits	PPHITS	Player hits over/under
Home Runs	PPHR	Player home runs over/under
RBIs	PPRBI	Player RBIs over/under
Total Bases	PPTB	Player total bases over/under
Runs	PPRUNS	Player runs scored over/under

Ice Hockey

Type	Code	Description
Goals	PPGOALS	Player goals over/under
Assists	PPAST	Player assists over/under
Points	PPPTS	Player points (goals + assists) over/under
Shots on Goal	PPSOG	Player shots on goal over/under
Saves	PPSAVES	Goalie saves over/under

Soccer

Type	Code	Description
Goals	PPGOALS	Player goals over/under
Assists	PPAST	Player assists over/under
Shots on Target	PPSOT	Player shots on target over/under

Soccer-Specific (EPL)

Type	Code	Description	Contract Format
Moneyline	M	3-way result	{TEAM} or D (draw)

Contract Ticker Formats

Moneyline (-M)

Contract Ticker: {TEAM}

Contract	Meaning
DAL	Dallas
HOU	Houston
D	Draw (soccer only)

Full Ticker Example: GEMI-NBA-2602121800-HOU-DAL-M-DAL

Spread (-S)

Contract Ticker: {TEAM}{LINE}

Contract	Meaning
DAL6	Dallas -6.5
HOU6	Houston +6.5

Full Ticker Example: GEMI-NBA-2602121800-HOU-DAL-S-DAL6

Total (-T)

Contract Ticker: O{LINE} or U{LINE}

Contract	Meaning
O222	Over 222.5
U222	Under 222.5

Full Ticker Example: GEMI-NBA-2602121800-HOU-DAL-T-O222

Team Total (-TT)

Contract Ticker: {TEAM}O{LINE} or {TEAM}U{LINE}

Contract	Meaning
HOUO110	Houston Over 110.5
HOUU110	Houston Under 110.5
DALO112	Dallas Over 112.5
DALU112	Dallas Under 112.5

Full Ticker Example: GEMI-NBA-2602121800-HOU-DAL-TT-HOUO110

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Individual Sports

Individual sports use a tournament or race-based ticker format. Instead of a home/away matchup, the event represents a competition with N individual competitors, each getting their own contract.

Event Ticker Format

Structure

Code
 
GEMI-{SPORT}-{EVENT}-{MARKET}-{YYYYMMDD}

Components

Component	Format	Description
GEMI	literal	Gemini prediction market prefix
SPORT	[A-Z0-9]+	Sport identifier (GOLF, F1)
EVENT	[A-Z]{2,5}	Abbreviated event name
MARKET	[A-Z]+	Market type (WIN for tournament/race winner)
YYYYMMDD	[0-9]{8}	Event end date (when winner is determined)

Regex Pattern

Code
 
^GEMI-([A-Z0-9]+)-([A-Z]{2,5})-([A-Z]+)-(\d{8})$

Capture Groups:

1. Sport
2. Event abbreviation
3. Market type
4. End date (YYYYMMDD)

Supported Individual Sports

Sport	Code	Event Abbreviation	Competitors
Golf	GOLF	3-char tournament name	~60-80 per tournament
Formula 1	F1	3-char GP name + GP	~20 per race

Contract Ticker Format

Contract Ticker: {COMPETITOR} — uppercase alphabetic name of the competitor.

Sport	Format	Collision Handling	Examples
Golf	Uppercase last name	Prepend first name	SCHEFFLER, JOHNSMITH
Formula 1	Driver symbol	Pre-assigned in DB	VER, HAM, NOR

Golf

Event Ticker

Code
 
GEMI-GOLF-{ABBREV}-WIN-{YYYYMMDD}

Component	Description	Example
GEMI	Gemini prediction market prefix	GEMI
GOLF	Sport identifier	GOLF
ABBREV	First 3 uppercase alpha chars of tournament name (after stripping "The " prefix)	MAS (Masters), PGA (PGA Championship)
WIN	Tournament winner market	WIN
YYYYMMDD	Final round date	20260412

Tournament Abbreviation Rules

1. Strip leading "The " / "the " (case-insensitive)
2. Strip trailing year suffix (e.g., " 2025")
3. Remove all non-alphanumeric characters
4. Uppercase
5. Take first 3 characters

Tournament	Abbreviation
Masters Tournament	MAS
THE PLAYERS Championship	PLA
PGA Championship	PGA
U.S. Open	USO
The Open Championship	OPE
Arnold Palmer Invitational	ARN
Valero Texas Open	VAL

Contract Ticker (Player)

• Default: Uppercase last name, alpha characters only (SCHEFFLER, MCILROY, WOODS)
• On collision: Prepend first name (JOHNSMITH, JAMESSMITH)
• Special characters stripped: J.J. Spaun → SPAUN, Si Woo Kim → KIM

Golf Examples

Masters Tournament, Apr 12 2026

Market	Event Ticker	Contract	Full Ticker
Scheffler wins	GEMI-GOLF-MAS-WIN-20260412	SCHEFFLER	GOLF-MAS-WIN-20260412-SCHEFFLER
McIlroy wins	GEMI-GOLF-MAS-WIN-20260412	MCILROY	GOLF-MAS-WIN-20260412-MCILROY
Rahm wins	GEMI-GOLF-MAS-WIN-20260412	RAHM	GOLF-MAS-WIN-20260412-RAHM

PGA Championship, May 17 2026

Market	Event Ticker	Contract	Full Ticker
Woods wins	GEMI-GOLF-PGA-WIN-20260517	WOODS	GOLF-PGA-WIN-20260517-WOODS
Schauffele wins	GEMI-GOLF-PGA-WIN-20260517	SCHAUFFELE	GOLF-PGA-WIN-20260517-SCHAUFFELE

Formula 1

Event Ticker

Code
 
GEMI-F1-{ABBREV}GP-WIN-{YYYYMMDD}

Component	Description	Example
GEMI	Gemini prediction market prefix	GEMI
F1	Sport identifier	F1
ABBREV	First 3 uppercase chars of GP location + GP	MIAGP (Miami), AUSGP (Australian)
WIN	Race winner market	WIN
YYYYMMDD	Race date	20260504

Contract Ticker (Driver)

Pre-assigned driver symbols from the database (e.g., VER, HAM, NOR, LEC).

Formula 1 Examples

Miami Grand Prix, May 4 2026

Market	Event Ticker	Contract	Full Ticker
Verstappen wins	GEMI-F1-MIAGP-WIN-20260504	VER	F1-MIAGP-WIN-20260504-VER
Hamilton wins	GEMI-F1-MIAGP-WIN-20260504	HAM	F1-MIAGP-WIN-20260504-HAM
Norris wins	GEMI-F1-MIAGP-WIN-20260504	NOR	F1-MIAGP-WIN-20260504-NOR

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Futures Format

Futures use a modified structure with F appended to the league code.

Structure

Code
 
GEMI-{LEAGUE}F-{SEASON}{TYPE}-{SUBJECT}

Components

Component	Format	Description
LEAGUE	[A-Z]+	League code
F	literal	Futures indicator
SEASON	[0-9]{4}	Season span (e.g., 2526 for 2025-26)
TYPE	varies	Future type code
SUBJECT	varies	Team or entity

Future Types

Type	Code	Example
Championship	CHAMP	GEMI-NBAF-2526CHAMP-LAL
Conference	CONF	GEMI-NBAF-2526CONF-WEST-LAL
Division	DIV	GEMI-NFLF-2526DIV-AFCN-CLE
MVP	MVP	GEMI-NBAF-2526MVP-LUKA

Regex Pattern

Code
 
^GEMI-([A-Z]{2,6})F-(\d{4})([A-Z]+)(?:-([A-Z]+))?-([A-Z]+)$

Capture Groups:

1. League
2. Season (YYYY format, e.g., 2526)
3. Future type (CHAMP, CONF, DIV, MVP)
4. Sub-category (optional, e.g., WEST, AFCN)
5. Subject (team or player)

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Complete Examples

NBA Game

Houston @ Dallas, Feb 12 2026 18:00 UTC

Market	Event Ticker	Contract	Full Ticker
Dallas win	GEMI-NBA-2602121800-HOU-DAL-M	DAL	GEMI-NBA-2602121800-HOU-DAL-M-DAL
Houston win	GEMI-NBA-2602121800-HOU-DAL-M	HOU	GEMI-NBA-2602121800-HOU-DAL-M-HOU
Dallas -6.5	GEMI-NBA-2602121800-HOU-DAL-S	DAL6	GEMI-NBA-2602121800-HOU-DAL-S-DAL6
Houston +6.5	GEMI-NBA-2602121800-HOU-DAL-S	HOU6	GEMI-NBA-2602121800-HOU-DAL-S-HOU6
Over 222.5	GEMI-NBA-2602121800-HOU-DAL-T	O222	GEMI-NBA-2602121800-HOU-DAL-T-O222
Under 222.5	GEMI-NBA-2602121800-HOU-DAL-T	U222	GEMI-NBA-2602121800-HOU-DAL-T-U222
Houston Over 110.5	GEMI-NBA-2602121800-HOU-DAL-TT	HOUO110	GEMI-NBA-2602121800-HOU-DAL-TT-HOUO110
Dallas Under 112.5	GEMI-NBA-2602121800-HOU-DAL-TT	DALU112	GEMI-NBA-2602121800-HOU-DAL-TT-DALU112
Luka Over 30.5 pts	GEMI-NBA-2602121800-HOU-DAL-PPPTS	LUKAO30	GEMI-NBA-2602121800-HOU-DAL-PPPTS-LUKAO30
Luka Under 10.5 reb	GEMI-NBA-2602121800-HOU-DAL-PPREB	LUKAU10	GEMI-NBA-2602121800-HOU-DAL-PPREB-LUKAU10

NFL Game

Buffalo @ Kansas City, Jan 12 2026 18:30 UTC

Market	Full Ticker
Kansas City win	GEMI-NFL-2601121830-BUF-KC-M-KC
Kansas City -3.5	GEMI-NFL-2601121830-BUF-KC-S-KC3
Over 47.5	GEMI-NFL-2601121830-BUF-KC-T-O47
Mahomes Over 2.5 TDs	GEMI-NFL-2601121830-BUF-KC-PPTD-MAHOMESO2
Mahomes Over 299.5 yds	GEMI-NFL-2601121830-BUF-KC-PPYDS-MAHOMESO299

NCAAM Game

Duke @ UNC, Mar 15 2026 19:00 UTC

Market	Full Ticker
UNC win	GEMI-NCAAM-2603151900-DUKE-UNC-M-UNC
Duke +3.5	GEMI-NCAAM-2603151900-DUKE-UNC-S-DUKE3
Over 145.5	GEMI-NCAAM-2603151900-DUKE-UNC-T-O145

EPL Match

Arsenal vs Man City, Feb 15 2026 15:00 UTC

Market	Full Ticker
Arsenal win	GEMI-EPL-2602151500-ARS-MCI-M-ARS
Man City win	GEMI-EPL-2602151500-ARS-MCI-M-MCI
Draw	GEMI-EPL-2602151500-ARS-MCI-M-D
Over 2.5 goals	GEMI-EPL-2602151500-ARS-MCI-T-O2

Golf Tournament

Masters Tournament, Apr 12 2026

Market	Event Ticker	Contract	Full Ticker
Scheffler wins	GEMI-GOLF-MAS-WIN-20260412	SCHEFFLER	GOLF-MAS-WIN-20260412-SCHEFFLER
McIlroy wins	GEMI-GOLF-MAS-WIN-20260412	MCILROY	GOLF-MAS-WIN-20260412-MCILROY
Matsuyama wins	GEMI-GOLF-MAS-WIN-20260412	MATSUYAMA	GOLF-MAS-WIN-20260412-MATSUYAMA

Formula 1 Race

Miami Grand Prix, May 4 2026

Market	Event Ticker	Contract	Full Ticker
Verstappen wins	GEMI-F1-MIAGP-WIN-20260504	VER	F1-MIAGP-WIN-20260504-VER
Norris wins	GEMI-F1-MIAGP-WIN-20260504	NOR	F1-MIAGP-WIN-20260504-NOR
Leclerc wins	GEMI-F1-MIAGP-WIN-20260504	LEC	F1-MIAGP-WIN-20260504-LEC

Futures

Market	Ticker
Los Angeles 2025-26 NBA Championship	GEMI-NBAF-2526CHAMP-LAL
Kansas City AFC West Division	GEMI-NFLF-2526DIV-AFCW-KC
Duke NCAA Tournament	GEMI-NCAAMF-2526CHAMP-DUKE

Validation Rules

Team Sports Event Ticker Validation

1. Must start with GEMI-
2. Must be ALL UPPERCASE
3. League code must be from supported list
4. DateTime must be valid UTC timestamp
5. Team codes must be valid for the league
6. Market type must be from supported list

Individual Sports Event Ticker Validation

1. Must start with GEMI-
2. Must be ALL UPPERCASE
3. Sport code must be from supported list (GOLF, F1)
4. Event abbreviation must be 2-5 alpha characters
5. Market type must be valid (WIN)
6. Date must be valid YYYYMMDD format

Contract Ticker Validation

Team Sports

Market Type	Valid Pattern	Examples
Moneyline	^[A-Z]{2,4}$ or ^D$	DAL, HOU, D
Spread	^[A-Z]{2,4}[0-9]+$	DAL6, HOU6
Total	^[OU][0-9]+$	O222, U47
Team Total	^[A-Z]{2,4}[OU][0-9]+$	HOUO110, DALU112

Individual Sports

Market Type	Valid Pattern	Examples
Winner (Golf)	^[A-Z]+$	SCHEFFLER, MCILROY, JOHNSMITH
Winner (F1)	^[A-Z]{2,4}$	VER, HAM, NOR

Full Ticker Validation

Team Sports:

Code
 
^GEMI-[A-Z]{2,6}-\d{10}-[A-Z]{2,4}-[A-Z]{2,4}-[A-Z]{1,7}-[A-Z0-9]+$

Individual Sports:

Code
 
^GEMI-[A-Z0-9]+-[A-Z]{2,5}-[A-Z]+-\d{8}-[A-Z]+$

Changelog

Version	Effective Date	Changes
1.2	2026-03-30	Added Individual Sports section (Golf, Formula 1) with tournament/race-based ticker format
1.1	2026-03-04	Corrected prefix from GEM- to GEMI- for consistency with crypto tickers
1.0	2026-02-13	Initial specification