# Funding as a signal: does it work? A backtest on 20 coins

> Does an extreme funding rate predict the next move? 40 Research Lab scans and 40 backtests on Binance perpetuals, 2020–2026: mostly no.

Research · Janorium · Published 2026-10-15  
Web page: https://janorium.com/articles/funding-rate-signal-backtest

Mostly no. Across 20 Binance perpetuals since 2020, hot funding was followed by more gains, not a reversal, and the classic fade — short the crowd paying above 0.05% — lost money on 18 of 20 coins. Only "buy when funding turns negative" on BTC held up statistically, and it did not carry over to other coins or to the last two years.

![Six headline numbers: 9 of 120 event tests survived the multiplicity check, 0 of 60 funding-level tests predicted the next return, 17 of 20 coins kept rising after hot funding, shorting hot funding made money on 2 of 20, was liquidated on 10 of 20, buying negative funding made money on 9 of 20](https://janorium.com/articles/funding-rate-signal-backtest/scorecard.en.svg 'Two questions, 20 coins, six years — every number is from the scans and runs below')

## Setup

- **Data:** the 20 most-traded Binance USDT-M perpetuals as of 2021-01-01, the same set as in
  [the golden cross study](https://janorium.com/articles/golden-cross-top-20-crypto-2020-2025), 4h bars, 2020-01-01 → 2026-10-01.
  The funding rate is the last settled 8-hour rate.
- **Two events:** _hot_ funding, above 0.05% per 8 hours — longs paying a lot — and _negative_ funding, below 0 —
  shorts paying. 15,842 hot bars and 56,529 negative bars in total.
- **Statistics:** 40 Research Lab scans (20 coins × 2 events): the mean return 1, 3 and 7 days after the event against
  the coin's usual return over the same horizon, with a multiple-testing correction (q-value), a rotation test that
  respects overlapping windows, and a split into two halves of the period. Then one job on BTC that held back the last
  30% of the period, repeated the test on 12 other coins and over 8 rolling windows.
- **Trading:** two fixed rules, not tuned — short when funding is hot, long when it is negative, exit after 42 bars (7
  days) — at 1x, isolated margin, 0.05% fee and 0.05% slippage per side, funding charged and paid.

## After hot funding, prices kept rising

![For each of 20 coins: the mean 3-day return after hot funding, after negative funding and on an ordinary 3 days](https://janorium.com/articles/funding-rate-signal-backtest/events.en.svg 'A dark ring marks the findings that survived the multiplicity check')

The fade idea says a crowd paying high funding is about to be wrong. On 17 of 20 coins the 3 days after hot funding
were better than usual, not worse — and none of the 20 was significant on the hot side except EGLD, whose two halves of
the period disagree. Hot funding is a feature of bull markets: 79–95% of each coin's hot bars fall in the first half of
its history.

Negative funding was followed by a better-than-usual 3 days on 14 of 20 coins and a better 7 days on only 11 of 20. It
passed the correction on two coins: BTC — +1.22% over 3 days against the usual +0.44%, q 0.02, both halves positive —
and THETA. Three of the 40 scans produced a significant finding — about the four that chance alone gives at this threshold.

## Does the funding level predict the next move?

![BTC: rank correlation of funding with the next 1, 3 and 7 days, in-sample, on the held-out tail and over rolling windows](https://janorium.com/articles/funding-rate-signal-backtest/validation.en.svg 'In-sample the relation is slightly negative; on the held-out tail it fades, and 1–3 of 12 other coins agree')

Read as a number rather than an event, funding passed the correction in 0 of 60 tests (20 coins × 3 horizons). On BTC
the relation was slightly negative in all 8 rolling windows — higher funding, slightly weaker next days — but it was not
significant in-sample, the platform found no agreement on the held-out 2024-09 → 2026-10 tail, and only 1 to 3 of 12
other coins showed the same sign.

## Trading it

![Total return of the two funding rules and of holding, for each of 20 coins, log scale](https://janorium.com/articles/funding-rate-signal-backtest/backtests.en.svg 'Shorting hot funding was liquidated on 10 of 20 coins')

Shorting hot funding made money on 2 of 20 coins and finished below -90% on 12. It collects funding while it waits, but
hot funding comes with manias: a 1x short is liquidated when the price doubles, and that happened on 10 coins. Buying
negative funding did better — 9 of 20 in profit, BTC +333.12% — but on the 13 coins that rose it beat simply holding
only once (BCH).

**Backtest: [Funding fade: short when funding > 0.05%, hold 7 days](https://janorium.com/backtests/460)**  
BTCUSDT · 4h · Futures · 2020-01-01 → 2026-10-01

| Return | Max drawdown | Sharpe | Win rate | Trades |
| --- | --- | --- | --- | --- |
| +6.89% | 63.97% | 0.18 | 50.0% | 42 |

*BTC: short when funding > 0.05%, hold 7 days — +6.89%*

**Backtest: [Funding fade: long when funding < 0, hold 7 days](https://janorium.com/backtests/480)**  
BTCUSDT · 4h · Futures · 2020-01-01 → 2026-10-01

| Return | Max drawdown | Sharpe | Win rate | Trades |
| --- | --- | --- | --- | --- |
| +333.12% | 40.84% | 0.77 | 51.6% | 155 |

*BTC: long when funding < 0, hold 7 days — +333.12%*

**Backtest: [Funding fade: short when funding > 0.05%, hold 7 days](https://janorium.com/backtests/462)**  
XRPUSDT · 4h · Futures · 2020-01-01 → 2026-10-01

| Return | Max drawdown | Sharpe | Win rate | Trades |
| --- | --- | --- | --- | --- |
| -100.00% | 100.00% | -0.86 | 57.9% | 57 |

*XRP: short when funding > 0.05% — -100.00%, liquidated 3 times*

> **What this test does not show**
>
> - **Two thresholds, chosen up front.** 0.05% and 0 are common rules of thumb; other cut-offs or a funding z-score could
>   behave differently — and testing many of them is exactly how a false edge is found.
> - **Events overlap.** A hot spell lasts many 4-hour bars, so 15,842 hot bars are a few hundred independent episodes;
>   the scans count those, the raw totals do not.
> - **Perpetuals, 1x, one exit.** Seven days is one holding period; a short with a stop or a smaller size would lose
>   differently.
> - **One market history.** 2020–2026 holds one mania that produced most of the hot funding.

## Conclusion

- An extreme funding rate on its own did not predict a reversal on Binance perpetuals in 2020–2026 — after hot funding,
  prices more often kept rising.
- Fading the crowd paying hot funding was a way to get squeezed: losses on 18 of 20 coins, liquidations on 10.
- Negative funding on BTC was the one statistically solid finding, and it did not replicate across coins or survive
  the held-out tail — treat it as a hypothesis, not a signal.

What happens in the last hour before a settlement — do traders sell to avoid paying? That is a separate test:
[the hour before funding](https://janorium.com/articles/funding-settlement-hour-backtest).

More research: [DCA or lump sum](https://janorium.com/articles/dca-vs-lump-sum-btc-eth-backtest) and
[the golden cross on the top-20 coins](https://janorium.com/articles/golden-cross-top-20-crypto-2020-2025).