net—long
Prediction-market indices

Long or short
any theme.
Traded in one click.

Net Long builds indices out of Polymarket's prediction markets. Each index bundles the markets belonging to one theme into a single tradable index.

Think AI is underpriced? Go long AIX. Think the doom headlines are overblown? Short DOOM. One click trades the whole bundle.

Open the terminal →
12
live indices
106
markets tracked
15s
price refresh
DOOM
World Doom Index
Flagship
025507510022.8WORLD DOOM INDEX
Inside DOOM — biggest markets
  • China invade Taiwan by June 30, 20275%
  • China invade Taiwan by end of 20265%
  • The U.S. invade Iran before 20275%
  • Iran nuclear test before 20275%
  • Iran Nuke before 20275%
−1.27D32 markets insideTrade →
GSPX66.1+5.5DOOM22.8−1.2USIX83.6+3.6AIX41.9−7.5MEX31.3−6.2RECX47.5+0.8WOKE49.4−13.5CRYP47.6+10.2TRMP21.6−0.8ELON39.7+5.6CHLK66.8+9.0PUTX56.3+8.0
The indices

See exactly what's inside

Every index is just a weighted bundle of real Polymarket markets — no black box. The numberMarket-implied temperature of the theme, 0–100.is the bundle's market-implied temperature, 0–100.

DOOM
World Doom Index
22.8
−1.27D32 markets
What's inside
  • China invade Taiwan by June 30, 20275%
  • China invade Taiwan by end of 20265%
  • The U.S. invade Iran before 20275%
  • Iran nuclear test before 20275%
+ 28 more markets in the bundle
GSPX
Germany Stability & Prosperity
66.1
+5.57D7 markets
What's inside
  • Friedrich Merz out as Chancellor of Germany…15%
  • AfD win the most seats in the 2026 Berlin s…15%
  • AfD win the most seats in the 2026 Mecklenb…15%
  • Claudia Sheinbaum out as President of Mexic…15%
+ 3 more markets in the bundle
AIX
AI Acceleration
41.9
−7.57D5 markets
What's inside
  • GPT-6 be released by December 31, 202620%
  • GPT-6 be released before GTA VI20%
  • OpenAI announces it has achieved AGI before…20%
  • The next Google Gemini Pro model be release…20%
+ 1 more markets in the bundle
How it works

Dozens of markets, one number, one trade

01

We bundle the markets

For each theme we collect the Polymarket markets that actually drive it — war, pandemic and collapse markets for DOOM; elections and coalition markets for GSPX. Each market gets a weight by how much it matters. You can see the full list, always.

02

The bundle becomes one number

Blend the markets' odds by weight and you get a 0–100 index: the market-implied temperature of the theme. DOOM at 25 means markets price the world as fairly calm; at 70, they're scared.

03

You go net long — or short

One click buys the whole bundle in index weights. Long if you think the theme heats up, short if you think it cools. No hand-picking 30 markets, no managing them one by one.

A parlay needs every leg right or it pays nothing. A Net Long basket is a weighted portfolio — being mostly right still pays, in proportion to how right the theme is. One losing leg doesn't zero you.

A real basket

$100 short DOOM right now buys:

The exact shares the engine allocates — live prices, weighted by how much each market matters to the theme. This is the whole trade.

short DOOM · $10032 legs
  • NOWill China invade Taiwan by end of 2026?6.6 sh94¢
  • NOWill China invade Taiwan by June 30, 2027?6.6 sh87.5¢
  • NOIran nuclear test before 2027?6.0 sh92.5¢
  • NOIran Nuke before 2027?6.0 sh90.5¢
…and 28 more
Max payoutWhat the basket pays if every leg resolves the basket's way.$129.57

Short buys the complement side of every leg — exact, no borrow. Open DOOM and size your own →

The whole theme is one trade away.

Open the terminal, pick a direction, and the exact basket prices itself against live markets.

Open the terminal →Read the whitepaper