% 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 395,420,348 shares (as of 2025-12-31, source company_meta:diluted-was-fallback). 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 withheld — no market cap for API in the served universe — the cohort is size-matched, and an unmatched percentile would compare a micro-cap register to a mega-cap one.
Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.
| Holder | 2024-Q4 | 2025-Q1 | 2025-Q2 | 2025-Q3 | 2025-Q4 | 2026-Q1 | Latest value |
|---|---|---|---|---|---|---|---|
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 7.5M | 7.5M | 7.5M | 7.5M | 7.5M | 7.5M | $26M |
| TMT General Partner Ltd | 3.1M | 10.9M | 9.4M | 9.4M | 2.4M | 2.4M | $8M |
| HHLR ADVISORS, LTD.tracked | 2.1M | 2.1M | 2.1M | 2.1M | 2.1M | 2.1M | $7M |
| Yunqi Capital Ltd | — | — | — | 1.5M | 2.0M | 2.0M | $7M |
| Allspring Global Investments Holdings, LLC | 2.5M | 2.3M | 1.9M | 1.8M | 1.8M | 1.8M | $6M |
| Neumann Advisory Hong Kong Ltd | 2.2M | 2.2M | 2.1M | 1.8M | 1.6M | 1.1M | $4M |
| MORGAN STANLEY | 566K | 397K | 653K | 828K | 1.2M | 1.1M | $4M |
| UBS Group AG | 198K | 219K | 97K | 250K | 154K | 971K | $3M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 741K | 593K | 611K | 600K | 663K | 776K | $3M |
| Yiheng Capital Management, L.P. | — | 193K | 534K | 534K | 534K | 726K | $3M |
| CloudAlpha Capital Management Limited/Hong Kong | 3.0M | 3.0M | 3.0M | 1.7M | 646K | 646K | $2M |
| ACADIAN ASSET MANAGEMENT LLC | — | 704K | 1.5M | 1.0M | 1.0M | 624K | $2M |
| RENAISSANCE TECHNOLOGIES LLC | 618K | 455K | 399K | 393K | 378K | 496K | $2M |
| DIMENSIONAL FUND ADVISORS LP | 299K | 327K | 363K | 346K | 356K | 389K | $1M |
| Connor, Clark & Lunn Investment Management Ltd. | 445K | 868K | 843K | 693K | 413K | 331K | $1M |
Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.
Holder count only — too few computable %-of-shares-outstanding quarters for a % pane. Line breaks are quarters with no 13F record, never interpolated.
Short interest has its own tab now — open SI →
Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.
| Biggest buyers | Δ shares | Δ value | |
|---|---|---|---|
| UBS Group AG | +816,426 | $3M | ADD |
| Yiheng Capital Management, L.P. | +192,248 | $680,558 | ADD |
| RENAISSANCE TECHNOLOGIES LLC | +117,829 | $417,115 | ADD |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | +112,834 | $399,432 | ADD |
| GWN SECURITIES INC. | +89,075 | $315,326 | OPEN |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| Fideuram Asset Management (Ireland) dac | −949,677 | $3M | CLOSE |
| Perseverance Asset Management International | −700,000 | $2M | CLOSE |
| Neumann Advisory Hong Kong Ltd | −534,326 | $2M | TRIM |
| ACADIAN ASSET MANAGEMENT LLC | −382,726 | $1M | TRIM |
| NOTABLE CAPITAL MANAGEMENT, L.L.C. | −371,472 | $1M | CLOSE |
The 2025-Q4 register is as-filed in ITS OWN share basis; every count below was rebased into the 2026-Q1 basis (no split in between, factor 1). Dollar figures value the SHARE delta at one price — the 2026-03-31 close — rather than differencing two filings' own reported values, which would mix the quarter's price move into the trade figure.
13Fs disclose LONG US-listed positions only — shorts, most derivatives, bonds and non-US listings are invisible here, and a filer's quarter-over-quarter change is not necessarily a trade (index rebalances, in-kind transfers and entity successions all read as flow).
| Quarter | Holders | Shares held | % shares out | Value held |
|---|---|---|---|---|
| 2026-Q1 | 64 | 25,378,948 | — | $90M |
| 2025-Q4 | 68 | 28,718,013 | — | $118M |
| 2025-Q3 | 64 | 36,963,138 | — | $114M |
| 2025-Q2 | 66 | 37,779,411 | — | $117M |
| 2025-Q1 | 77 | 42,337,962 | — | $137M |
| 2024-Q4 | 65 | 31,940,648 | — | $133M |
| 2024-Q3 | 56 | 23,697,595 | — | $57M |
| 2024-Q2 | 52 | 24,290,984 | — | $52M |
| 2024-Q1 | 58 | 24,450,300 | — | $61M |
| 2023-Q4 | 62 | 24,581,262 | — | $65M |
| 2023-Q3 | 60 | 26,660,136 | — | $67M |
| 2023-Q2 | 59 | 29,817,842 | — | $93M |
| 2023-Q1 | 62 | 32,098,636 | — | $116M |
| 2022-Q4 | 73 | 35,568,782 | — | $139M |
| 2022-Q3 | 86 | 43,364,237 | — | $157M |
| 2022-Q2 | 92 | 46,157,451 | — | $303M |
| 2022-Q1 | 91 | 50,240,685 | — | $500M |
| 2021-Q4 | 113 | 60,724,193 | — | $985M |
| 2021-Q3 | 112 | 53,444,766 | — | $1.5B |
| 2021-Q2 | 126 | 52,540,808 | — | $2.2B |
| 2021-Q1 | 118 | 49,591,324 | — | $2.4B |
| 2020-Q4 | 83 | 45,275,836 | — | $1.8B |
| 2020-Q3 | 77 | 14,917,213 | — | $642M |
| 2020-Q2 | 69 | 14,315,537 | — | $628M |
