Institutional holders Insiders (Form 4) Congress
% of shares outstanding held
18.2%
Shares held (13F)
1,827,020
Top holders largest 26 of 26 · Δ vs 2025-Q4 # Holder Shares Value % of shares out Δ QoQ 1 1 WYNNEFIELD CAPITAL INC 433,605 433,605 $1M 4.33% — 2 2 ARS Investment Partners, LLC 314,908 314,908 $947,873 3.14% — 3 3 VANGUARD CAPITAL MANAGEMENT LLC 277,359 277,359 $834,851 2.77% NEW † 4 4 Potomac Capital Management, Inc. 249,561 249,561 $751,179 2.49% — 5 5 CITADEL ADVISORS LLC 95,907 95,907 $288,680 0.96% ADD 403% 6 6 GEODE CAPITAL MANAGEMENT, LLC 93,194 93,194 $280,583 0.93% TRIM -3% 7 7 COMMONS CAPITAL, LLC 69,413 69,413 $208,933 0.69% — 8 8 VANGUARD FIDUCIARY TRUST CO 53,166 53,166 $160,030 0.53% NEW 9 9 DIVERSIFY WEALTH MANAGEMENT, LLC 35,288 35,288 $149,533 0.35% NEW 10 10 STATE STREET CORP 47,400 47,400 $142,674 0.47% — 11 11 HBK Sorce Advisory LLC 25,000 25,000 $102,500 0.25% — 12 12 BlackRock, Inc. 19,984 19,984 $60,152 0.20% — 13 13 NORTHERN TRUST CORP 19,448 19,448 $58,538 0.19% — 14 14 DIMENSIONAL FUND ADVISORS LP 18,706 18,706 $56,305 0.19% ADD 5% 15 15 SUSQUEHANNA INTERNATIONAL GROUP, LLP 15,923 15,923 $47,928 0.16% TRIM -34% 16 16 Rothschild Wealth LLC 15,866 15,866 $47,757 0.16% TRIM -86% 17 17 Kingsview Wealth Management, LLC 12,500 12,500 $37,625 0.12% TRIM -23% 18 18 XTX Topco Ltd 11,274 11,274 $33,935 0.11% NEW 19 19 HRT FINANCIAL LP 10,825 10,825 $32,000 0.11% NEW 20 20 Vanguard Global Advisers, LLC 2,591 2,591 $7,799 0.03% NEW 21 21 UBS Group AG 2,478 2,478 $7,459 0.02% NEW 22 22 Tower Research Capital LLC (TRC) 1,242 1,242 $3,738 0.01% ADD 85% 23 23 CALDWELL SUTTER CAPITAL, INC. 750 750 $2,258 0.01% — 24 24 ARMSTRONG ADVISORY GROUP, INC 625 625 $1,882 0.01% — 25 25 Caitong International Asset Management Co., Ltd 1 1 $3 0.00% NEW 26 26 ROYAL BANK OF CANADA 6 6 $0 0.00% ADD 100%
† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.
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 trends· top 15 holders · shares held over 6 quarters green added · red trimmed6 12 24 Max
Holder 2024-Q4 2025-Q1 2025-Q2 2025-Q3 2025-Q4 2026-Q1 Latest value WYNNEFIELD CAPITAL INC 434K 434K 434K 434K 434K 434K $1M ARS Investment Partners, LLC 284K 284K 313K 313K 315K 315K $947,873 VANGUARD CAPITAL MANAGEMENT LLC — — — — — 277K $834,851 Potomac Capital Management, Inc. — — — — 250K 250K $751,179 CITADEL ADVISORS LLC 23K — 15K 20K 19K 96K $288,680 GEODE CAPITAL MANAGEMENT, LLC 82K 91K 91K 93K 96K 93K $280,583 COMMONS CAPITAL, LLC 69K 69K 69K 69K 69K 69K $208,933 VANGUARD FIDUCIARY TRUST CO — — — — — 53K $160,030 DIVERSIFY WEALTH MANAGEMENT, LLC — — — — — 35K $149,533 STATE STREET CORP 47K 47K 47K 47K 47K 47K $142,674 HBK Sorce Advisory LLC 27K 27K 27K 27K 25K 25K $102,500 BlackRock, Inc. 39K 38K 21K 21K 20K 20K $60,152 NORTHERN TRUST CORP 31K — — 20K 19K 19K $58,538 DIMENSIONAL FUND ADVISORS LP — 17K 16K 14K 18K 19K $56,305 SUSQUEHANNA INTERNATIONAL GROUP, LLP — 17K 20K 11K 24K 16K $47,928
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.
Institutional footprint by quarter % of shares outstanding held 20.4% 0.0% reporting 13F holders 27 1 2021-Q4 2026-Q1 2021-Q4 · 1 holders · 0.0% of shares out 2022-Q1 · 1 holders · 0.0% of shares out 2022-Q2 · 1 holders · 0.0% of shares out 2022-Q3 · 1 holders · 0.0% of shares out 2022-Q4 · 1 holders · 0.0% of shares out 2023-Q1 · 2 holders · 0.3% of shares out 2023-Q2 · 18 holders · 9.4% of shares out 2023-Q3 · 21 holders · 13.9% of shares out 2023-Q4 · 21 holders · 13.4% of shares out 2024-Q1 · 20 holders · 12.8% of shares out 2024-Q2 · 19 holders · 12.9% of shares out 2024-Q3 · 21 holders · 13.2% of shares out 2024-Q4 · 21 holders · 13.2% of shares out 2025-Q1 · 21 holders · 13.7% of shares out 2025-Q2 · 21 holders · 14.6% of shares out 2025-Q3 · 23 holders · 15.7% of shares out 2025-Q4 · 27 holders · 20.4% of shares out 2026-Q1 · 26 holders · 18.2% of shares out Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).
Quarter Holders Shares held % shares out Value held 2026-Q1 26 1,827,020 18.2% $6M 2025-Q4 27 2,043,543 20.4% $10M 2025-Q3 23 1,571,212 15.7% $8M 2025-Q2 21 1,462,119 14.6% $6M 2025-Q1 21 1,371,469 13.7% $4M 2024-Q4 21 1,324,549 13.2% $5M 2024-Q3 21 1,321,145 13.2% $4M 2024-Q2 19 1,289,736 12.9% $4M 2024-Q1 20 1,278,449 12.8% $5M 2023-Q4 21 1,338,736 13.4% $7M 2023-Q3 21 1,397,644 13.9% $10M 2023-Q2
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.
