What changed in perp markets today
On September 20, 2026, PerpFinder recorded 5 changes in perp markets from its stored trading cost, funding, open interest and volume data. Lighter kept rank 1 for a $10,000 BTC market buy, at 0.59 bps against 0.52 bps one day earlier. Lighter kept rank 1 for a $10,000 ETH market buy, at 0.11 bps against 0.47 bps one day earlier.
The daily changes in trading cost, funding, open interest, listings and volume quality. Each change shows the new value, the earlier value and the time of both readings.
Changes on September 20, 2026
Lowest BTC cost at $10,000
Lighter kept rank 1 for a $10,000 BTC market buy, at 0.59 bps against 0.52 bps one day earlier.
- Now
- Lighter, 0.59 bpsSep 20, 18:56 UTC
- Before
- Lighter, 0.52 bpsSep 19, 18:56 UTC
- Change
- +0.06 bps
Open the cost rankingSource: Stored cost sweeps: taker fee + half-spread + price impact
Lowest ETH cost at $10,000
Lighter kept rank 1 for a $10,000 ETH market buy, at 0.11 bps against 0.47 bps one day earlier.
- Now
- Lighter, 0.11 bpsSep 20, 18:56 UTC
- Before
- Lighter, 0.47 bpsSep 19, 18:56 UTC
- Change
- -0.36 bps
Open the cost rankingSource: Stored cost sweeps: taker fee + half-spread + price impact
Largest open-interest move
BingX open interest rose 8.0% in one day, from $2.19B to $2.36B.
- Now
- BingX, $2.36BSep 20, 15:59 UTC
- Before
- $2.19BSep 19, 15:50 UTC
- Change
- +8.0%
Open the open-interest rankingSource: Daily venue snapshot
Perp market count change
Crypto.com removed 65 perp markets in one day, from 352 to 287.
- Now
- Crypto.com, 287 perp marketsSep 20, 15:59 UTC
- Before
- 352 perp marketsSep 19, 15:50 UTC
- Change
- -65
Open the venue listSource: Daily venue snapshot (exchange market counts)
Volume-quality hold-outs
The headline volume totals hold out 1 venue: WEEX.
- Now
- WEEX (unverified)Sep 20, 15:59 UTC
- Before
- No earlier reading—
- Change
- —
Open the volume-quality researchSource: Daily venue snapshot and the volume hold-out rules
Checks with no result
- Two funding sweeps one day apart were not available.
- No venue cost for a $10,000 BTC or ETH market buy doubled against the sweep one day earlier.
Terms used on this page
- Total trading cost (all-in cost)
- Total trading cost (all-in cost) is the selected-side cost of one order at a given size: the fee plus half of the spread plus the price impact, in bps and USD.
- Funding rate
- A funding rate is the periodic payment between long and short positions that keeps a perpetual futures price near its index price. When the rate is positive, longs pay shorts.
- Open interest (OI)
- The total notional value of all outstanding perpetual futures positions on a venue — one side counted, in USD.
Cite this data
Cite the dated address. The page for one day keeps the same numbers after later digests arrive. Each change links to the page with its full data and source.
PerpFinder. "What changed in perp markets on September 20, 2026." Digest of September 20, 2026, newest reading Sep 20, 18:56 UTC. https://perpfinder.com/today/2026-09-20
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How this page is made
A scheduled job builds this page once a day at 00:40 UTC, after the 00:10 UTC daily venue snapshot. The job reads stored data only. Each change compares the newest stored reading with the reading from about one day earlier.
Trading cost is the taker fee plus half the spread plus price impact for one market buy. Funding shows the rate in the venue's own interval. A dash (—) means that no earlier reading is available. The digest never replaces a missing value with zero.