Skip to content
Predict2Win

Betting signals, explained

Read the market like a sharp

Every game card on Predict2Win reads the market for you: where the line moved, where the exchanges are heading, where the big money is, and what a fair price is. Here's how each signal works, with the real rules behind it.

Free plan, no card. Chrome extension and web. 21+ only.

NFL · Sun 1:00 PM 4 signals

Dolphins @ Bills

Line moveBUF -3 to -3.5
Steam3 exchanges moved
Sharp money74% money, 44% bets
Fair priceBills -118
Example signals

One card, every signal

An example Bills vs Dolphins card. Each numbered signal shows only when its rule is met, so most cards show a few, not all of them.

Example card with made-up prices. Numbers match the sections below: 1 line move, 2 steam, 3 fair price, 4 betting splits, 5 consensus, 6 exposure.

How each signal works

Line moves Opened Signals pill

How far the sportsbook's line has moved since it opened.

How it works

  • We compare DraftKings' opening spread, total and moneyline with its line now (from ESPN).
  • Pre-game only: once a game starts, it's the opener against the closing line, never the live line.
  • Line moved in the Signals pill shows only the games that moved, biggest move first. A point of spread or total counts as 1; 3 points of win chance count as 1, so a moneyline-only sport like hockey ranks fairly.

Example

Opened BUF −1.5 → −3 · O/U 47.5 → 46

The Bills went from 1.5- to 3-point favorites: money came in on Buffalo. The total dropped 1.5: money came in on the Under.

Use it: a line that crossed a key number (3 or 7 in football) is a big move. If you liked the Bills at −1.5, the value is mostly gone at −3.

Movement & Steam Exchanges

Where each prediction-market exchange has moved since the first prices we saw, and when they move together.

How it works

  • Every 5 minutes we read Kalshi, Polymarket, Novig, ProphetX, and 4cx, and keep each one's first prices for the game.
  • Each exchange's two prices have its margin taken out, so you see a clean win chance.
  • Steam shows when 2 or more exchanges move 3+ points toward the same side and none moves that far the other way. Exchanges publish no bet counts, so moving together is the closest thing they show to sharp money.

Example

Movement Polymarket Bills 52% → 57.9% · ProphetX Bills 53.2% → 58.3% Steam: Bills

Two exchanges moved 5+ points toward Buffalo, and none went the other way.

Use it: steam usually means the price is about to get worse. Every steam signal is logged at kickoff and graded on the Sharp $ Record page, so you can see whether it wins before you trust it. Tap the chart icon on the card to see the whole move.

Fair price & +EV Exchanges

The market's own fair price for the game, and any exchange paying more than it.

How it works

  • For each exchange, take its two prices on a bet and remove its margin (its bid-ask spread and fee) with the power method.
  • Average across the exchanges. DraftKings, a sportsbook, is left out. That's the Fair line.
  • A green +EV flag shows when one exchange's best price beats the other exchanges' fair price by 1% to 10%. A bigger gap is almost always a stale or mismatched price, so it's left out. +EV flags are available on Premium.

Example

Fair Bills −139 · Dolphins +139 +4.6% EV: Dolphins ML +150

Kalshi, Polymarket, and ProphetX price the Dolphins fair at about +139, but Novig pays +150. Each $100 there is worth about $4.60 on average.

Use it: a +EV flag usually means one exchange hasn't caught up, and it closes fast. To check any price yourself, use the free no-vig calculator.

Public & sharp money Bets / Money

Each side's share of DraftKings' bets (tickets) and of its money (handle).

How it works

  • Refreshed every 10 minutes and shown in the last hour before kickoff, when the bets are in. It freezes at kickoff.
  • Public: a side with 70%+ of the bets. Casual bettors are piling on, and books often shade that price.
  • Sharp $: a side whose share of the money is 15+ points above its share of the bets. Fewer, bigger bets, the way bigger and sharper bettors bet.
  • Too few bets: a side with no bets or no money (usually a line that just moved). It's ignored.

Example

Total · Under 36% of bets / 62% of money Sharp $: Under Total

Only about a third of the tickets are on the Under, but they carry most of the money: 26 points more money than bets.

Use it: sharp money against a public side is the classic contrarian setup. Tap the chart icon to see how the bets and money changed through the day.

Reverse line move Bets / Money

The line moving against the side most people are betting.

How it works

  • 60%+ of the bets are on one side, yet the spread or total moved the way money on the other side moves it.
  • Pre-game opener against the current line, for spreads and totals.
  • ✓ exchanges on the chip: the exchanges' own spread or total moved the same way since their first prices. ✗ exchanges: they moved the other way.

Example

Bills −3 → −2.5 with 68% of bets on the Bills Reverse move: Dolphins

Most tickets are on Buffalo, yet the book made Buffalo cheaper. It's moving to attract the Bills, so the bigger money is likely on Miami.

Use it: one of the best-known sharp signals. Search rlm on the dashboard to see every game with one.

Consensus & fade Signals pill

What the analysts you follow agree on, and who's worth betting against.

How it works

  • 🔥 Consensus: 3 or more of your sources lean the same way, and at least twice as many lean that way as the other. An analyst's spread and moneyline on one team count once.
  • 🧊 Fade: an analyst with 25+ graded picks, a win rate of 45% or less, and −5 units or worse.
  • Consensus and Fade in the Signals pill filter the board to those games.

Example

Bills · 3 of your sources agree (1 the other way)

Fade ColdCapper → Dolphins

ColdCapper took the Bills. Their record says to look at the other side.

Use it: consensus is strongest when it agrees with steam or sharp money, and weakest when it just follows the public.

Your exposure Your wagers

What's riding on each side of a game across every exchange, and what you net whichever side wins.

How it works

  • Your wagers from 4cx, Polymarket, Kalshi, and ProphetX are added up per side. It shows once you have two or more on a game.
  • Holding both sides, each at one line: what you net if each side wins (one side's winnings less what's lost on the other).
  • Full-game spreads, totals and moneylines.

Example

$115 on Bills −2.5 (−115), wins $100 · $55 on Dolphins +2.5 (−110), wins $50

Bills −2.5 → +$45.00 · Dolphins +2.5 → −$65.00

Bills cover: +$100 − $55. Dolphins cover: +$50 − $115.

Use it: to get out of a position, sell it on the exchange where you hold it.

Outbid & Match Your offers

When someone posts a better price than your resting offer.

How it works

  • Your open offers on 4cx and orders on Polymarket are checked against the best price on the market.
  • When yours isn't the best anymore, the card shows it, and a desktop alert can tell you.
  • ⚡ Match opens 4cx's own Edit Order with the best price filled in. You confirm it there: we never place or change an order.

Example

⚠ Outbid. Best offer: Over 49.5 −108

Your offer at −110 won't be taken while someone offers −108.

Middles Exchanges

Two bets on different lines that can both win.

How it works

  • We compare every exchange's spread and total, at the card's line and at each exchange's nearby lines.
  • When one side's line at one place and the other side's at another leave a gap, a result in that gap wins both bets.
  • The card shows the two bets, where both win, and what $100 split between them does: a small loss if it misses, a big win if it hits. Only middles that cost $10 or less per $100 on a miss are shown.

Example

Middle Bills −2.5 −110 Polymarket + Dolphins +3.5 −118 Novig Both win on Bills by 3

$49.18 on the Bills and $50.82 on the Dolphins: −$6.11 if the game misses 3, +$87.78 if the Bills win by exactly 3.

Use it: a middle pays off when its gap lands often enough to cover the small losses. Check how often games land on that number with the half-point calculator, and grab both bets fast: lines move.

Closing line value Records

The best test of whether you, or an analyst, have a real edge.

How it works

  • We keep each game's last exchange prices before kickoff and take the fair price from them, the same way as the Fair line.
  • Each graded pick and wager gets its CLV: what the price taken was worth at that fair price.
  • Records shows it under every pick, as Beat the close for each analyst, and for your wagers as a CLV tile, your win rate beside the one the close expected, and a breakdown by exchange, sport, and bet.

Example

Took Dolphins +125 · CLV +3.5% · fair 46%

At kickoff the exchanges priced the Dolphins at 46%. At +125 that's worth 2.25 × 0.46 = 1.035: +3.5% per bet, win or lose.

Use it: results swing for months, but CLV shows up within weeks. An analyst who keeps beating the close is worth following even through a losing stretch.

Putting it together

Everything agrees

BUF −1.5 → −3 · Steam: Bills · 3 sources on Bills · Public: Bills ML

The book, the exchanges, and your sources all moved to Buffalo, and so did the public. The move has likely happened already: only take it at or better than the Fair price.

Money against the crowd

Public: Bills ML · Reverse move: Dolphins · Sharp $: Dolphins

The tickets are on Buffalo, but the line and the big money went to Miami. That's a reason to look at the Dolphins, ideally where a +EV flag shows a price above fair.

No signal is a sure thing. They show where prices and money are moving, not who will win. Check your own record against the close in Records before you trust any of them.

Free tools to go with them

Questions

What is steam in sports betting?

Steam is the market moving fast and together toward one side. Predict2Win calls it when two or more prediction-market exchanges move 3 points of win chance or more toward the same side since their opening prices, and none moves that far the other way.

What does sharp money mean on Predict2Win?

A side whose share of the money at DraftKings is 15 points or more above its share of the bets: fewer, bigger bets, the way larger and sharper bettors tend to bet.

What is a reverse line move?

When 60% or more of the bets are on one side but the line moves toward the other side. The book is moving against the popular side, which usually means the bigger money is on the other one.

How is the fair price worked out?

Each exchange's two prices for a bet have its margin (its bid-ask spread and fee) taken out, and the results are averaged across Kalshi, Polymarket US, Novig, ProphetX, and 4cx, with worldwide Polymarket's midpoint (polymarket.com, which people in the US can't use) counted as one more. DraftKings, a sportsbook, is left out.

What is closing line value (CLV)?

What the price you took was worth at the fair price when the game started. Taking +125 on a side the exchanges priced at 46% at kickoff is +3.5% CLV. Beating the close over many bets is the most reliable sign of a real edge.

Are these signals guaranteed to win?

No. They show where prices and money are moving, not who will win. Use them to find a better price and to judge your own bets, and only bet what you can afford to lose.

See every signal on tonight's games

Free to start, on the web and in the Chrome extension. Add the analysts you follow, and every card reads the market for you.

Predict2Win shows prices and data from the exchanges, DraftKings (through ESPN), and the analysts you follow; it doesn't take bets or give financial advice. Prices move: check any bet on the exchange before you place it. For adults 21 and older; each exchange has its own age and state rules.

Start free