% of shares outstanding not shown: no SEC cover-page share count falls within 120 days of the 2026-Q1 quarter end, so any percentage would rest on a count that cannot speak for this quarter. Holder share counts are shown as filed.
Crowding percentile withheld — no market cap for XFRAX 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 |
|---|---|---|---|---|---|---|---|
| GUGGENHEIM CAPITAL LLC | 1.1M | 1.3M | 1.4M | 1.6M | 1.6M | 1.4M | $16M |
| Penserra Capital Management LLC | 1.0M | — | — | — | — | 966K | $11M |
| BANK OF AMERICA CORP /DE/ | 650K | 564K | 533K | 526K | 504K | 463K | $5M |
| Invesco Ltd. | 469K | 419K | 415K | 355K | 374K | 402K | $4M |
| Marathon Strategic Advisors, LLC | 249K | 257K | 280K | 331K | 369K | 393K | $4M |
| RAYMOND JAMES FINANCIAL INC | 142K | 181K | 227K | 323K | 364K | 384K | $4M |
| Edgemoor Investment Advisors, Inc. | 146K | 172K | 188K | 201K | 296K | 328K | $4M |
| LOOMIS SAYLES & CO L P | — | — | — | — | — | 319K | $4M |
| Advisors Asset Management, Inc. | 381K | 377K | 288K | 280K | 227K | 248K | $3M |
| MORGAN STANLEY | 374K | 335K | 337K | 372K | 299K | 228K | $3M |
| Cerity Partners LLC | — | — | — | — | 215K | 225K | $2M |
| LPL Financial LLC | 507K | 216K | 177K | 340K | 279K | 207K | $2M |
| GraniteShares Advisors LLC | — | — | — | — | 230K | 206K | $2M |
| READYSTATE ASSET MANAGEMENT LP | — | — | — | — | 490K | 175K | $2M |
| COMMONWEALTH EQUITY SERVICES, LLC | 166K | 176K | 179K | 184K | 179K | 171K | $2M |
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 | |
|---|---|---|---|
| Penserra Capital Management LLC | +965,985 | $11M | OPEN |
| LOOMIS SAYLES & CO L P | +319,349 | $4M | OPEN |
| ABSOLUTE INVESTMENT ADVISERS, LLC | +109,230 | $1M | OPEN |
| WOLVERINE ASSET MANAGEMENT LLC | +61,361 | $711,788 | ADD |
| Arkadios Wealth Advisors | +58,692 | $680,827 | OPEN |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| READYSTATE ASSET MANAGEMENT LP | −314,720 | $4M | TRIM |
| Balyasny Asset Management L.P. | −219,426 | $3M | TRIM |
| Lalia Capital, LLC | −177,700 | $2M | CLOSE |
| ROYAL BANK OF CANADA | −137,566 | $2M | TRIM |
| GUGGENHEIM CAPITAL LLC | −137,219 | $2M | TRIM |
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 | 93 | 9,053,784 | — | $100M |
| 2025-Q4 | 86 | 8,867,889 | — | $105M |
| 2025-Q3 | 77 | 7,844,953 | — | $96M |
| 2025-Q2 | 80 | 7,620,959 | — | $100M |
| 2025-Q1 | 84 | 7,145,525 | — | $92M |
| 2024-Q4 | 88 | 8,329,546 | — | $114M |
| 2024-Q3 | 86 | 7,933,889 | — | $114M |
| 2024-Q2 | 81 | 7,072,998 | — | $92M |
| 2024-Q1 | 89 | 9,273,743 | — | $120M |
| 2023-Q4 | 86 | 9,519,753 | — | $121M |
| 2023-Q3 | 76 | 8,993,495 | — | $113M |
| 2023-Q2 | 77 | 9,652,997 | — | $118M |
| 2023-Q1 | 86 | 11,783,223 | — | $138M |
| 2022-Q4 | 96 | 10,625,635 | — | $120M |
| 2022-Q3 | 88 | 9,801,466 | — | $108M |
| 2022-Q2 | 94 | 9,204,832 | — | $105M |
| 2022-Q1 | 89 | 8,172,543 | — | $106M |
| 2021-Q4 | 82 | 8,445,558 | — | $114M |
| 2021-Q3 | 82 | 9,388,079 | — | $125M |
| 2021-Q2 | 89 | 9,981,727 | — | $132M |
| 2021-Q1 | 90 | 11,284,413 | — | $147M |
| 2020-Q4 | 93 | 14,442,849 | — | $175M |
| 2020-Q3 | 89 | 13,233,110 | — | $152M |
| 2020-Q2 | 93 | 13,682,457 | — | $153M |
| 2020-Q1 | 101 | 12,254,596 | — | $123M |
| 2019-Q4 | 109 | 11,892,308 | — | $160M |
| 2019-Q3 | 96 | 11,773,366 | — | $149M |
| 2019-Q2 | 91 | 12,244,294 | — | $157M |
| 2019-Q1 | 96 | 10,111,188 | — | $126M |
| 2018-Q4 | 100 | 10,643,710 | — | $127M |
| 2018-Q3 | 99 | 9,065,220 | — | $140M |
| 2018-Q2 | 89 | 9,071,498 | — | $126M |
| 2018-Q1 | 84 | 9,754,635 | — | $142M |
| 2017-Q4 | 88 | 10,433,328 | — | $144M |
| 2017-Q3 | 69 | 10,387,792 | — | $149M |
| 2017-Q2 | 69 | 9,688,782 | — | $136M |
| 2017-Q1 | 67 | 10,815,139 | — | $157M |
| 2016-Q4 | 75 | 13,176,572 | — | $190M |
| 2016-Q3 | 74 | 12,588,083 | — | $175M |
| 2016-Q2 | 76 | 11,834,229 | — | $155M |
| 2016-Q1 | 80 | 12,278,449 | — | $162M |
| 2015-Q4 | 81 | 11,947,013 | — | $154M |
| 2015-Q3 | 66 | 9,870,552 | — | $128M |
| 2015-Q2 | 65 | 8,953,180 | — | $121M |
| 2015-Q1 | 67 | 8,897,654 | — | $124M |
| 2014-Q4 | 75 | 9,110,139 | — | $122M |
| 2014-Q3 | 60 | 7,697,216 | — | $108M |
| 2014-Q2 | 67 | 7,652,766 | — | $112M |
| 2014-Q1 | 62 | 7,499,813 | — | $109M |
| 2013-Q4 | 55 | 7,260,525 | — | $106M |
| 2013-Q3 | 48 | 7,295,370 | — | $108M |
| 2013-Q2 | 45 | 7,054,324 | — | $109M |
| 2013-Q1 | 2 | 98,248 | — | $2M |
