ironflow/hyperliquid-open-interest

Hyperliquid Open Interest, Mark and Oracle Prices

Hourly open interest, mark price and oracle price for every Hyperliquid perp from 20 May 2023 to 31 October 2026: 5,938,268 rows across 553 markets, 235 native perps and 318 HIP-3 builder markets on xyz, para, hyna, km, cash, flx, vntl, io, mkts and abcd.

Total open interest grew from under $2 million across 28 markets in June 2023 to a peak of $18.35 billion at 04:00 UTC on 23 September 2026, and stood at $14.91 billion at the end of October 2026, $4.14 billion of it on HIP-3 markets. BTC peaked at $5.06 billion on 23 May 2025, ETH at $5.69 billion on 24 August 2025 and HYPE at $2.23 billion on 27 August 2026.

Hyperliquid's API only gives the current value; the history is in Hyperliquid's public archive as daily minute files, which leave out HIP-3 markets. This set joins that archive (until 2 August 2026) with Ironflow's own poller, which reads every market about every 10 seconds (since 3 August 2026), and keeps the last value of each hour.

Get live data

Live Hyperliquid data is on Ironflow. For data newer than this snapshot, use Ironflow's API: GET /v1/open-interest and GET /v1/mark-prices. No key is needed for the last 24 hours; a free key gives 30 days.

Source and updates

• Source: Hyperliquid's public archive (daily minute files) until 2 August 2026, then Ironflow's own poller, which reads every market about every 10 seconds. The last value of each hour is kept.
• Checks: compared with Hyperliquid's archive at the end of each hour on 15 October 2026 (see Notes).
• Updates: refreshed monthly, after each UTC month closes. For anything newer, use the API.
• Coverage: 20 May 2023 to 31 October 2026. HIP-3 open interest from 29 April 2026, HIP-3 mark and oracle prices from 3 August 2026.

Files

One Parquet file per month (UTC): data/YYYY-MM.parquet, one row per market per hour.

Column	Type	Meaning
timestamp	timestamp (UTC)	start of the hour; values are the last reading in that hour
market	string	Ironflow market symbol, e.g. BTC-PERP, xyz:NVDA-PERP
coin	string	Hyperliquid's name for the market, e.g. BTC, xyz:NVDA
dex	string	HIP-3 builder dex (xyz, para, ...); empty for native perps
mark_price	float	Hyperliquid's mark price; null where there is no reading (see Notes)
oracle_price	float	the oracle price Hyperliquid uses for funding; null where there is no reading
open_interest	float	open interest in units of the base asset, as Hyperliquid reports it
open_interest_usd	float	open_interest * mark_price; null when the mark price is

Use

import pandas as pd

x = pd.read_parquet("hf://datasets/ironflow/hyperliquid-open-interest/data/")
total = x.groupby("timestamp").open_interest_usd.sum() / 1e9
print(total.resample("W").last().tail())  # total open interest, $ billions

-- DuckDB: biggest 24-hour open interest increases in October 2026
WITH h AS (
  SELECT market, timestamp, open_interest_usd AS oi,
         lag(open_interest_usd, 24) OVER (PARTITION BY market ORDER BY timestamp) AS oi_24h_ago
  FROM 'data/2026-10.parquet'
)
SELECT market, timestamp, oi_24h_ago / 1e6 AS before_m, oi / 1e6 AS after_m
FROM h WHERE oi_24h_ago > 1e6
ORDER BY oi / oi_24h_ago DESC
LIMIT 10;

Notes

• HIP-3 markets: open interest starts on 29 April 2026, mark and oracle prices on 3 August 2026, because Hyperliquid's archive has no HIP-3 rows. HIP-3 oracle prices are complete from 9 September 2026. This accounts for nearly all of the 478,305 rows without a mark price.
• 301 hours have no rows at all, on 85 evenings between 11 August and 14 December 2024, 1 to 9 hours at a time. Hyperliquid's own archive files for those days end early (11 August 2024 stops at 18:31 UTC), so no public source has them.
• Oracle prices are also missing for native perps in a few stretches: some hours in September 2023 and May 2024, and parts of 8 July, 8 to 10 August, 27 and 30 August and 8 September 2026. 718,493 rows have no oracle price; 192 have no open interest.
• Checked against Hyperliquid's archive at the end of each hour on 15 October 2026 for BTC, ETH, HYPE, SOL, DOGE and ZEC: open interest matches to a median of 0.007%, mark and oracle prices to a median of 0.05% (the two sources sample a few seconds apart).
• No duplicate (market, timestamp) rows. Delisted markets are kept up to their last reading.

Changes

• v1, 1 November 2026. First release.

License and citation

CC BY 4.0. Credit "Ironflow (ironflow.sh)" when you use or share the data.