Arkham · ARKM/USDT · daily
What happens to Arkham after large-trade selling?
Since 2023, Arkham has shown large-trade selling 15 times. In the 14 cases old enough to score, the price was higher 7 days later 43% of the time, with a median move of −1.4%. On an ordinary day the median 7-day move for ARKM is −2.5%.
No better than chance9
Once you allow for how many studies were run, a gap this large is luck about 96% of the time, so this signal has told you nothing reliable about the following week.
By holding period
| After | Cases | Higher | Median move | Middle half | Ordinary median | Gap | By luck | Proof score |
|---|---|---|---|---|---|---|---|---|
| 1 day | 15 | 53% | +1.2% | −3.3% to +3.2% | −0.3% | +1.5% | 59% | 14 |
| 3 days | 15 | 33% | −0.3% | −5.7% to +5.1% | −0.9% | +0.6% | 94% | 9 |
| 7 days | 14 | 43% | −1.4% | −8.6% to +2.8% | −2.5% | +1.1% | 96% | 9 |
| 14 days | 14 | 50% | −1.4% | −14.5% to +10.9% | −4.1% | +2.7% | 93% | 35 |
| 30 days | 14 | 29% | −17.1% | −28.6% to +2.2% | −5.5% | −11.6% | 72% | 41 |
“Ordinary median” is the median move of ARKM over the same number of days starting from any day. “Gap” is the signal's median minus the ordinary one. “By luck” is how often a gap at least that large comes from randomly chosen days, corrected for the 3,572 studies run at each holding period (for this study taken alone: 79%).
Holding it for 7 days
Dips and best points use each day's low and high, measured from the close on the signal day. Costs assume 0.3% for a round trip: a 0.1% exchange fee each way and 0.05% slippage each way.
Did it hold up over time?
Splitting the cases by date: in the earlier 8 the gap over 7 days was +3.2%, and in the later 6 it was −3.3%. The direction changed, which is what a pattern produced by chance tends to do.
Every occurrence
One square per occurrence, oldest first. Green: higher 7 days later. Red: lower. Grey: not yet 7 days old.
| Date | Close | +1d | +7d | +30d |
|---|---|---|---|---|
| 8 Nov 2026 | $0.09410 | +4.3% | open | open |
| 28 Mar 2026 | $0.09700 | −2.1% | −2.1% | +19.0% |
| 2 Jan 2026 | $0.2010 | +2.5% | +3.0% | −35.3% |
| 18 Dec 2025 | $0.1760 | +11.9% | +1.1% | +19.9% |
| 11 Dec 2025 | $0.2170 | −2.8% | −18.9% | −5.5% |
| 23 Oct 2025 | $0.3520 | +4.0% | −9.7% | −32.1% |
| 15 Oct 2025 | $0.3810 | −5.8% | −11.0% | −23.6% |
| 2 Oct 2025 | $0.5460 | +1.6% | −5.5% | −33.5% |
| 31 Aug 2025 | $0.4830 | −4.3% | +2.1% | +4.8% |
| 23 Nov 2024 | $2.14 | +2.1% | +12.9% | −27.0% |
| 16 Nov 2024 | $2.15 | −3.9% | −0.8% | −7.5% |
| 8 Nov 2024 | $2.20 | +1.2% | −6.1% | +9.6% |
The 12 most recent. All 15 are in the open data file.
The rule
Average trade size in the top 5% of the previous 180 days, with the share of volume from market buys below 50%. When the average trade gets unusually large, bigger players are active. Here they are active while market sells outweigh market buys.
Occurrences closer than 7 days to the previous one are not counted again. The signal is confirmed at the daily close (00:00 UTC) and returns are measured from that close. Full method.
The same signal on other coins
| Coin | Cases | Higher after 7d | Median | Gap | Verdict |
|---|---|---|---|---|---|
 Conflux | 31 | 35% | −8.7% | −7.1% | Some evidence · leans down |
 Polkadot | 35 | 66% | +3.6% | +4.6% | Weak evidence |
 Hedera | 43 | 30% | −4.7% | −3.5% | Weak evidence |
 Horizen | 44 | 36% | −4.4% | −3.8% | Weak evidence |
 Algorand | 39 | 31% | −4.3% | −3.3% | Weak evidence |
 The Sandbox | 41 | 37% | −4.2% | −2.9% | Weak evidence |
 Theta Network | 50 | 54% | +2.8% | +3.4% | Weak evidence |
 Ethereum | 82 | 38% | −1.7% | −2.0% | Weak evidence |
Whale footprint: large trades, sellers in control across all 94 coins
Other Arkham signals
New signals are sealed in the public ledger at the daily close. Members see them immediately; everyone else sees them a day later.
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