% of shares outstanding is not shown for BABX: this is a fund line, and we hold no cover-page share count for it at any quarter — a fund's shares outstanding move with creations and redemptions rather than with issuance and buybacks, and it is not the SEC cover-page count this percentage is defined against. The figure is withheld rather than computed against a count that does not exist. Holder share counts are shown as filed.
Crowding percentile withheld — no market cap for BABX in the served universe — the cohort is size-matched, and an unmatched percentile would compare a micro-cap register to a mega-cap one.
| # | Holder | Shares | Value | % of shares out | Δ QoQ |
|---|---|---|---|---|---|
| 1 | Optiver Holding B.V. | 61,09961,099 | $2M | — | ADD 189% |
| 2 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 46,73246,732 | $1M | — | ADD 13% |
| 3 | Genesis Financial Group, LLC | 30,18030,180 | $744,842 | — | TRIM -8% |
| 4 | GTS SECURITIES LLC | 12,47712,477 | $307,932 | — | ADD 28% |
| 5 | DGS Capital Management, LLC | 8,7348,734 | $215,555 | — | NEW |
| 6 | CITIGROUP INC | 1,3211,321 | $32,602 | — | NEW |
| 7 | UBS Group AG | 1,2021,202 | $29,665 | — | TRIM -51% |
| 8 | SIMPLEX TRADING, LLC | 1,1661,166 | $28,776 | — | TRIM -52% |
| 9 | GROUP ONE TRADING LLC | 1,0641,064 | $26,260 | — | ADD 31% |
| 10 | SBI Securities Co., Ltd. | 352352 | $8,687 | — | ADD 6% |
| 11 | Tower Research Capital LLC (TRC) | 5656 | $1,382 | — | TRIM -19% |
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 |
|---|---|---|---|---|---|---|---|
| Optiver Holding B.V. | 143K | 13K | — | 157 | 21K | 61K | $2M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 70K | 45K | 41K | 41K | 41K | 47K | $1M |
| Genesis Financial Group, LLC | — | — | — | — | 33K | 30K | $744,842 |
| GTS SECURITIES LLC | — | — | — | — | 10K | 12K | $307,932 |
| DGS Capital Management, LLC | — | — | — | — | — | 9K | $215,555 |
| CITIGROUP INC | — | — | — | 1K | — | 1K | $32,602 |
| UBS Group AG | 2 | 2 | 2 | 2 | 2K | 1K | $29,665 |
| SIMPLEX TRADING, LLC | 185 | 10K | 1K | — | 2K | 1K | $28,776 |
| GROUP ONE TRADING LLC | — | — | — | 841 | 813 | 1K | $26,260 |
| SBI Securities Co., Ltd. | 51 | 180 | 547 | 1K | 332 | 352 | $8,687 |
| Tower Research Capital LLC (TRC) | — | — | 3K | — | 69 | 56 | $1,382 |
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.
| Quarter | Holders | Shares held | % shares out | Value held |
|---|---|---|---|---|
| 2026-Q1 | 11 | 164,383 | — | $4M |
| 2025-Q4 | 13 | 130,294 | — | $5M |
| 2025-Q3 | 14 | 126,510 | — | $7M |
| 2025-Q2 | 8 | 85,719 | — | $2M |
| 2025-Q1 |
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 | |
|---|---|---|---|
| Optiver Holding B.V. | +39,958 | $986,163 | ADD |
| DGS Capital Management, LLC | +8,734 | $215,555 | OPEN |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | +5,502 | $135,789 | ADD |
| GTS SECURITIES LLC | +2,712 | $66,932 | ADD |
| CITIGROUP INC | +1,321 | $32,602 | OPEN |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| Belvedere Trading LLC | −12,935 | $319,236 | CLOSE |
| HRT FINANCIAL LP | −5,682 | $140,232 | CLOSE |
| Genesis Financial Group, LLC | −2,508 | $61,897 | TRIM |
| UBS Group AG | −1,265 | $31,220 | TRIM |
| SIMPLEX TRADING, LLC | −1,241 | $30,628 | 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).
| 12 |
| 152,980 |
| — |
| $5M |
| 2024-Q4 | 7 | 232,343 | — | $4M |
| 2024-Q3 | 3 | 2,278 | — | $59,924 |
| 2024-Q2 | 4 | 13,734 | — | $178,916 |
| 2024-Q1 | 4 | 19,545 | — | $261,811 |
| 2023-Q4 | 3 | 30,618 | — | $486,979 |
| 2023-Q3 | 2 | 2,697 | — | $53,454 |
| 2023-Q2 | 1 | 19,765 | — | $382,057 |
| 2023-Q1 | 2 | 42,524 | — | $1M |
| 2022-Q4 | 1 | 25,740 | — | $619,304 |
