# Pistons vs. Cavaliers: O/U 209.5

> Polymarket binary prediction market. 56% implied probability of YES as of Sat, 16 May 2026 00:37:32 GMT. 24h change +3.5pp, 24h volume $580.9K.

**Canonical URL:** https://orrery.me/markets/nba-det-cle-2026-05-15-total-209pt5
**Polymarket source:** https://polymarket.com/event/nba-det-cle-2026-05-15-total-209pt5
**Category:** Sports
**Resolves by:** May 15, 2026
**Last fetched:** 2026-05-16T00:37:32.148Z

## Live snapshot

| Metric | Value |
|---|---|
| YES probability | **56¢** (56%) |
| Δ 1h | +9.0pp |
| Δ 24h | +3.5pp |
| Δ 1w | +0.0pp |
| 24h volume | $580.9K |
| Lifetime volume | $586.3K |
| Liquidity (orderbook depth) | $86.2K |
| Spread | 2.00pp |

## Resolution

**Resolves by:** May 15, 2026

**Source:** https://www.nba.com/

### Market description (verbatim from Polymarket)

> In the upcoming NBA game, scheduled for May 15 at 7:00 PM ET:
> 
> This market will resolve to "Over" if the Pistons and Cavaliers combine to score 210 or more points in this game.
> 
> If the combined total is less than 210, this market will resolve to "Under".
> 
> If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50.

## Active signals

Signals are deterministic rules with explicit confidence (0..1). They describe *why a price moved* — they are not trade recommendations and do not predict the outcome.

- **momentum** (confidence 72%): Probability moved up 3.5pp in 24h with 6.7× liquidity turnover and a tight spread.
- **resolution_risk** (confidence 40%): Market has reached expiry. Watch the UMA dispute window.

## Top holders

**Top YES holders**

- `0xa2cc…0cbc` — 219,662.24 shares
- `0x9770…0ff5` — 69,000 shares
- `0x9495…9a27` — 56,424.46 shares
- `0x1117…3532` — 21,999.986 shares
- `0xbd52…df69` — 19,998 shares

**Top NO holders**

- `0x2d7b…e2ce` — 212,931.859 shares
- `0x6ade…f5b0` — 201,079.179 shares
- `0xfe78…0319` — 21,975.861 shares
- `0xa080…234f` — 10,000 shares
- `0xaca2…b9a1` — 6,000 shares

## 7-day price-history summary

| Metric | Value |
|---|---|
| Sample count | 44 |
| Window start | 2026-05-14T05:00:06.000Z |
| Window end | 2026-05-16T00:37:10.000Z |
| Range | 50¢ → 60¢ |
| Net change | +10.5pp |

Full series available as JSON via `GET https://orrery.me/api/markets?slugs=nba-det-cle-2026-05-15-total-209pt5` — the chart on the human page is rendered from this same data.

## Cite this

```
Orrery. "Pistons vs. Cavaliers: O/U 209.5 — 56% on Polymarket."
Retrieved 2026-05-16T00:37:32.148Z from https://orrery.me/markets/nba-det-cle-2026-05-15-total-209pt5.
```

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