Sei (SEI)
Rank #130 · Layer 1 · data since 2025-07-09 · last close 2026-10-26
Sei (SEI) monthly returns (%)
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | -21.1 | -21.7 | -27.4 | 14.7 | 19.0 | -30.3 | -12.6 | 7.0 | 65.6 | -28.8 | · | · |
| 2025 | · | · | · | · | · | · | 11.1 | -3.2 | -2.9 | -30.9 | -28.3 | -18.9 |
| Avg | -21.1 | -21.7 | -27.4 | 14.7 | 19.0 | -30.3 | -0.7 | 1.9 | 31.4 | -30.9 | -28.3 | -18.9 |
| Median | -21.1 | -21.7 | -27.4 | 14.7 | 19.0 | -30.3 | -0.7 | 1.9 | 31.4 | -30.9 | -28.3 | -18.9 |
October so far: -28.8% against an average of -30.9% and a median of -30.9% across 1 completed October, 0 of them positive.
Values in %. Current and first-listed months are partial (greyed) and are left out of the Avg and Median rows.
returnsview.com
SEI seasonality — average by calendar month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg | -21.1% | -21.7% | -27.4% | +14.7% | +19.0% | -30.3% | -0.7% | +1.9% | +31.4% | -30.9% | -28.3% | -18.9% |
| Win rate | 0%/1 | 0%/1 | 0%/1 | 100%/1 | 100%/1 | 0%/1 | 50%/2 | 50%/2 | 50%/2 | 0%/1 | 0%/1 | 0%/1 |
Win rate = share of positive months / sample size.
SEI risk & extremes
SEI drawdown & rolling returns
Percent below the all-time high at each month-end — how far underwater the asset was.
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Frequently asked questions
What was Sei's best month?+
Sei's strongest completed month on record is September 2026, at +65.61%.
What was Sei's worst month?+
Its weakest completed month on record is October 2025, at -30.85%.
Is Sei up this year?+
Sei is down 52.87% year to date, measured from its last close before 1 January.
What is Sei's 1-year return?+
-74.75% over the past twelve months, comparing the latest close with the most recent close on or before the same date a year earlier.
What is Sei's biggest drawdown?+
The deepest peak-to-trough fall on record is 89.6%, measured on month-end closes since 2025.
About Sei
Sei is a layer 1 token ranked #130 by market value, worth about $347 million. It is young enough (2025) that its baby photos are still on-chain, and swings hard enough to keep its holders humble. Since 2025 it is down 75% overall — surviving is its own genre of awesome.
Did you know?
- Its best month on record was September 2026 at +65.61%; its worst, October 2025 at -30.85%.
Trivia for entertainment — the numbers come from our price data; the jokes don't.