Amber International Holding Ltd (Nasdaq: AMBR), an SEC filer in Finance Services, closed at $1.05, -3.7%, on 2026-08-28, with a return on equity of -116.1%, a net margin of -88.7% and 3-year sales growth of -52.6%. Institutional ownership, earnings history and filed financials are on the tabs below.
% of shares outstanding not shown: this line files 20-F annual reports only — a foreign private issuer whose US listing trades as ADSs (depositary receipts), while its cover-page share count is in ORDINARY shares. The depositary ratio is not in our data. The count we hold for this line is 471,376,257 shares (as of 2025-12-31, source dei). Dividing one by the other is wrong by the whole ratio (a 5:1 ADR reads one fifth of the true percentage), so the percentage is withheld rather than served wrong. Holder share counts are shown as filed.
Crowding percentile lands with its cohort — the cohort is size-matched, so it needs a market cap for AMBR in the served universe — that lands with the next screener build.
| # | Holder | Shares | Value | % of shares out | Δ QoQ |
|---|---|---|---|---|---|
| 1 | Pantera Capital Partners LP | 95,69495,694 | $225,838 | — | — |
| 2 | SmartHarvest Portfolios, LLC | 32,21532,215 | $76,027 | — | ADD 60% |
| 3 | XTX Topco Ltd | 27,33227,332 | $64,504 | — | TRIM -34% |
| 4 | UBS Group AG | 26,78626,786 | $63,215 | — | ADD 396% |
| 5 | CITADEL ADVISORS LLC | 19,49019,490 | $45,996 | — | TRIM -62% |
| 6 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 11,75511,755 | $27,742 | — | TRIM -57% |
| 7 | TWO SIGMA INVESTMENTS, LP | 11,50211,502 | $27,145 | — | — |
| 8 | BlackRock, Inc. | 1,8451,845 | $4,354 | — | TRIM -41% |
| 9 | RHUMBLINE ADVISERS | 1,0271,027 | $2,424 | — | — |
| 10 | Daiwa Securities Group Inc. | 400400 | $944 | — | NEW |
Ranked by each filer’s own reported value, not shares.
| Biggest buyers | Δ shares | Δ value | |
|---|---|---|---|
| UBS Group AG | +21,388 | $50,476 | ADD |
| SmartHarvest Portfolios, LLC | +12,081 | $28,511 | ADD |
| Daiwa Securities Group Inc. | +400 | $944 | OPEN |
| SBI Securities Co., Ltd. | +133 | $314 | ADD |
| Caitong International Asset Management Co., Ltd | +2 | $5 | OPEN |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| Clear Street Group Inc. | −90,905 | $214,536 | CLOSE |
| MILLENNIUM MANAGEMENT LLC | −61,098 | $144,191 | CLOSE |
| CITADEL ADVISORS LLC | −31,505 | $74,352 | TRIM |
| MORGAN STANLEY | −26,007 | $61,377 | TRIM |
| MARSHALL WACE, LLP | −22,856 | $53,940 | CLOSE |
Prior quarter split-rebased · 13Fs are long, US-listed only.
| Holder | 2024-Q4 | 2025-Q1 | 2025-Q2 | 2025-Q3 | 2025-Q4 | 2026-Q1 | Latest value |
|---|---|---|---|---|---|---|---|
| Pantera Capital Partners LP | — | — | — | 96K | 96K | 96K | $225,838 |
| SmartHarvest Portfolios, LLC | — | — | — | — | 20K | 32K | $76,027 |
| XTX Topco Ltd | — | — | 13K | — | 41K | 27K | $64,504 |
| UBS Group AG | 1K | — | 4K | 3K | 5K | 27K | $63,215 |
| CITADEL ADVISORS LLC | 12K | — | 21K | 64K | 51K | 19K | $45,996 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | — | — | 26K | 57K | 28K | 12K | $27,742 |
| TWO SIGMA INVESTMENTS, LP | — | — | — | 13K | 12K | 12K | $27,145 |
| BlackRock, Inc. | — | — | 124 | 28K | 3K | 2K | $4,354 |
| RHUMBLINE ADVISERS | 2K | 2K | 2K | 663 | 1K | 1K | $2,424 |
| Daiwa Securities Group Inc. | — | — | — | — | — | 400 | $944 |
Green = added, red = trimmed, grey = held; a dash is a quarter with no 13F on file — a gap, not an exit.
Holders only — breaks = no 13F.
Short interest has its own tab now — open SI →
SEC Form 13F · ~10,250 filers, 10y · long-only, US-listed, filed ≤45d after quarter-end.
