GEOSPACE TECHNOLOGIES CORP (GEOS) — Institutional Holders, Q2 2026
83 institutional investment managers reported a GEOS position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $34.9M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
GEOS in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- GRACE & WHITEAdded · +200,035 sh+$1.4M
- ROBOTTI ROBERTNew · +128,436 sh+$869.5K
- MARSHALL WACE, LLPAdded · +113,110 sh+$765.8K
- US BANCORP \DE\Added · +85,632 sh+$579.7K
- RENAISSANCE TECHNOLOGIESNew · +44,299 sh+$299.9K
Biggest sellers
- DISCIPLINED GROWTH INVESTORSSold out · -1,101,426 sh-$7.5M
- First Eagle Investment ManagementSold out · -240,000 sh-$1.6M
- SEI INVESTMENTSTrimmed · -211,541 sh-$1.4M
- Moors & CabotTrimmed · -171,100 sh-$1.2M
- SUSQUEHANNA INTERNATIONAL GROUP, LLPTrimmed · -113,366 sh-$767.5K
GEOS 13F holders ranked 1–83 of 83
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | Tieton Capital Management#1 · 907,265 sh | 907,265 | $6.1M | 1.77% | -0.5% |
| 2 | GRACE & WHITE#2 · 673,236 sh | 673,236 | $4.6M | — | +42.3% |
| 3 | VANGUARD CAPITAL MANAGEMENT#3 · 515,067 sh | 515,067 | $3.5M | <0.01% | -10.7% |
| 4 | DIMENSIONAL FUND ADVISORS#4 · 392,423 sh | 392,423 | $2.7M | <0.01% | -20.1% |
| 5 | MARSHALL WACE, LLP#5 · 301,916 sh | 301,916 | $2.0M | <0.01% | +59.9% |
| 6 | BlackRock#6 · 231,765 sh | 231,765 | $1.6M | 0.00% | +2.7% |
| 7 | US BANCORP \DE\#7 · 212,766 sh | 212,766 | $1.4M | <0.01% | +67.4% |
| 8 | SEI INVESTMENTS#8 · 199,365 sh | 199,365 | $1.3M | <0.01% | -51.5% |
| 9 | GEODE CAPITAL MANAGEMENT#9 · 164,180 sh | 164,180 | $1.1M | <0.01% | +7.9% |
| 10 | STATE STREET#10 · 163,075 sh | 163,075 | $1.1M | 0.00% | +19.2% |
| 11 | De Lisle Partners LLP#11 · 147,133 sh | 147,133 | $998.3K | 0.11% | 0.0% |
| 12 | ROBOTTI ROBERT#12 · 128,436 sh | 128,436 | $869.5K | 0.14% | New |
| 13 | TWO SIGMA INVESTMENTS#13 · 82,184 sh | 82,184 | $556.4K | <0.01% | +11.2% |
| 14 | BRIDGEWAY CAPITAL MANAGEMENT#14 · 79,693 sh | 79,693 | $539.5K | <0.01% | +1.1% |
| 15 | VANGUARD FIDUCIARY#15 · 76,586 sh | 76,586 | $518.5K | <0.01% | +0.7% |
| 16 | Glenorchy Capital Ltd#16 · 68,488 sh | 68,488 | $463.7K | 0.02% | -60.5% |
| 17 | CITADEL ADVISORS#17 · 58,018 sh | 58,018 | $392.8K | 0.00% | +77.3% |
| 18 | EagleClaw Capital Managment#18 · 50,015 sh | 50,015 | $338.6K | 0.05% | -39.0% |
| 19 | RENAISSANCE TECHNOLOGIES#19 · 44,299 sh | 44,299 | $299.9K | <0.01% | New |
| 20 | ACADIAN ASSET MANAGEMENT#20 · 42,713 sh | 42,713 | $286.0K | <0.01% | New |
| 21 | IRONWOOD INVESTMENT MANAGEMENT#21 · 36,279 sh | 36,279 | $245.6K | 0.08% | +0.7% |
| 22 | JACOBS LEVY EQUITY MANAGEMENT#22 · 35,573 sh | 35,573 | $240.8K | <0.01% | New |
| 23 | SUSQUEHANNA INTERNATIONAL GROUP, LLP#23 · 33,029 sh | 33,029 | $223.6K | 0.00% | -77.4% |
| 24 | Kingsview Wealth Management#24 · 31,283 sh | 31,283 | $211.8K | <0.01% | +10.5% |
| 25 | HRT FINANCIAL#25 · 30,656 sh | 30,656 | $207.0K | <0.01% | New |
| 26 | Cambridge Investment Research Advisors#26 · 29,865 sh | 29,865 | $202.0K | <0.01% | -32.6% |
| 27 | NORTHERN#27 · 28,717 sh | 28,717 | $194.4K | 0.00% | -29.3% |
| 28 | AMERICAN CENTURY COMPANIES#28 · 28,201 sh | 28,201 | $190.9K | <0.01% | -3.8% |
| 29 | GOLDMAN SACHS GROUP#29 · 25,800 sh | 25,800 | $174.7K | 0.00% | New |
| 30 | Mraz, Amerine & Associates#30 · 24,385 sh | 24,385 | $165.1K | 0.02% | +1.3% |
| 31 | Vestmark Advisory Solutions#31 · 24,313 sh | 24,313 | $164.6K | <0.01% | 0.0% |
| 32 | Mount Yale Investment Advisors#32 · 24,313 sh | 24,313 | $164.6K | <0.01% | -0.2% |
| 33 | IMC-Chicago#33 · 23,132 sh | 23,132 | $156.6K | 0.00% | +71.4% |
| 34 | COMMONWEALTH EQUITY SERVICES#34 · 22,496 sh | 22,496 | $152.3K | <0.01% | +2.8% |
| 35 | JANE STREET GROUP#35 · 21,271 sh | 21,271 | $144.0K | 0.00% | New |
| 36 | Empowered Funds#36 · 20,291 sh | 20,291 | $137.4K | <0.01% | 0.0% |
| 37 | Tannin Capital#37 · 19,657 sh | 19,657 | $133.1K | 0.09% | +14.2% |
| 38 | AXQ CAPITAL#38 · 19,637 sh | 19,637 | $132.9K | 0.01% | New |
| 39 | Moors & Cabot#39 · 19,500 sh | 19,500 | $132.0K | <0.01% | -89.8% |
| 40 | GSA CAPITAL PARTNERS LLP#40 · 15,498 sh | 15,498 | $105.0K | <0.01% | New |
| 41 | MORGAN STANLEY#41 · 15,255 sh | 15,255 | $103.3K | 0.00% | -7.6% |
| 42 | XTX Topco Ltd#42 · 13,435 sh | 13,435 | $91.0K | <0.01% | New |
| 43 | Invesco Ltd.#43 · 12,680 sh | 12,680 | $85.8K | 0.00% | New |
| 44 | WELLS FARGO & COMPANY#44 · 12,448 sh | 12,448 | $84.3K | 0.00% | +22.3% |
| 45 | TCG Advisory Services#45 · 10,000 sh | 10,000 | $67.7K | <0.01% | 0.0% |
| 46 | UBS Group AG#46 · 7,336 sh | 7,336 | $49.7K | 0.00% | +423.6% |
| 47 | Vanguard Global Advisers#47 · 5,026 sh | 5,026 | $34.0K | 0.00% | 0.0% |
| 48 | SRS Capital Advisors#48 · 4,660 sh | 4,660 | $31.5K | <0.01% | New |
| 49 | PNC FINANCIAL SERVICES GROUP#49 · 4,000 sh | 4,000 | $27.1K | 0.00% | +100.0% |
| 50 | SIMPLEX TRADING#50 · 2,075 sh | 2,075 | $14.0K | 0.00% | +424.0% |
| 51 | SBI Securities , Ltd.#51 · 1,611 sh | 1,611 | $10.9K | — | -10.8% |
| 52 | JPMORGAN CHASE#52 · 1,621 sh | 1,621 | $10.6K | 0.00% | New |
| 53 | OSAIC#53 · 1,377 sh | 1,377 | $9.3K | 0.00% | -16.2% |
| 54 | FMR#54 · 1,194 sh | 1,194 | $8.1K | 0.00% | +7.7% |
| 55 | Integrated Wealth Concepts#55 · 1,150 sh | 1,150 | $7.8K | 0.00% | New |
| 56 | GROUP ONE TRADING, L.P.#56 · 1,075 sh | 1,075 | $7.3K | 0.00% | -58.3% |
| 57 | JONES FINANCIAL COMPANIES LLLP#57 · 1,060 sh | 1,060 | $6.8K | 0.00% | 0.0% |
| 58 | Larson Financial Group#58 · 858 sh | 858 | $5.8K | <0.01% | 0.0% |
| 59 | Parvin Asset Management#59 · 750 sh | 750 | $5.1K | <0.01% | 0.0% |
| 60 | MCGUIRE CAPITAL ADVISORS#60 · 750 sh | 750 | $5.1K | <0.01% | New |
| 61 | MCF Advisors#61 · 740 sh | 740 | $5.0K | <0.01% | New |
| 62 | HARBOUR INVESTMENTS#62 · 515 sh | 515 | $3.5K | 0.00% | +2.0% |
| 63 | CoreCap Advisors#63 · 500 sh | 500 | $3.4K | — | -47.4% |
| 64 | INTERNATIONAL ASSETS INVESTMENT MANAGEMENT#64 · 400 sh | 400 | $2.7K | <0.01% | 0.0% |
| 65 | Aventura Private Wealth#65 · 300 sh | 300 | $2.0K | <0.01% | -22.1% |
| 66 | ROYAL BANK OF CANADA#66 · 357 sh | 357 | $2.0K | 0.00% | -23.4% |
| 67 | Nemes Rush Group#67 · 280 sh | 280 | $1.9K | <0.01% | New |
| 68 | IFP Advisors#68 · 232 sh | 232 | $1.6K | — | 0.0% |
| 69 | Hurley Capital#69 · 206 sh | 206 | $1.4K | <0.01% | 0.0% |
| 70 | Farther Finance Advisors#70 · 184 sh | 184 | $1.2K | — | -4.2% |
| 71 | Kingdom Financial Group#71 · 176 sh | 176 | $1.2K | <0.01% | -9.3% |
| 72 | Capital Advisors, Ltd.#72 · 122 sh | 122 | $1.0K | <0.01% | 0.0% |
| 73 | Strategic Wealth Partners, Ltd.#73 · 100 sh | 100 | $677.00 | 0.00% | New |
| 74 | Triumph Capital Management#74 · 100 sh | 100 | $677.00 | — | 0.0% |
| 75 | TOTH FINANCIAL ADVISORY#75 · 100 sh | 100 | $677.00 | — | 0.0% |
| 76 | BNP PARIBAS FINANCIAL MARKETS#76 · 76 sh | 76 | $515.00 | 0.00% | -99.7% |
| 77 | SIGNATUREFD#77 · 54 sh | 54 | $366.00 | — | 0.0% |
| 78 | Caitong International Asset Management , Ltd#78 · 31 sh | 31 | $210.00 | 0.00% | +416.7% |
| 79 | Transamerica Financial Advisors#79 · 27 sh | 27 | $182.00 | 0.00% | New |
| 80 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#80 · 25 sh | 25 | $169.00 | 0.00% | 0.0% |
| 81 | Buck Wealth Strategies#81 · 20 sh | 20 | $135.00 | 0.00% | New |
| 82 | Allworth Financial#82 · 15 sh | 15 | $102.00 | 0.00% | 0.0% |
| 83 | Optiver Holding B.V.#83 · 6 sh | 6 | $41.00 | 0.00% | 0.0% |
Funds that sold out of GEOS in Q2 2026 (21)
Held GEOS at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| DISCIPLINED GROWTH INVESTORS1,101,426 sh | 1,101,426 | $13.4M |
| First Eagle Investment Management240,000 sh | 240,000 | $2.9M |
| MILLENNIUM MANAGEMENT107,386 sh | 107,386 | $1.3M |
| 683 Capital Management39,252 sh | 39,252 | $478.9K |
| Hudson Bay Capital Management22,293 sh | 22,293 | $272.0K |
| Qube Research & Technologies Ltd21,909 sh | 21,909 | $267.3K |
| BANK OF AMERICA18,060 sh | 18,060 | $220.3K |
| Schonfeld Strategic Advisors16,282 sh | 16,282 | $198.6K |
| ESSEX INVESTMENT MANAGEMENT13,636 sh | 13,636 | $166.4K |
| BARCLAYS PLC11,866 sh | 11,866 | $144.8K |
| OMERS ADMINISTRATION11,100 sh | 11,100 | $135.4K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT10,335 sh | 10,335 | $126.1K |
| Close Asset Management Ltd1,600 sh | 1,600 | $19.0K |
| Steward Partners Investment Advisory1,200 sh | 1,200 | $14.6K |
| CITIGROUP1,126 sh | 1,126 | $13.7K |
| Truvestments Capital745 sh | 745 | $9.1K |
| Covestor Ltd728 sh | 728 | $9.0K |
| RHUMBLINE ADVISERS439 sh | 439 | $5.4K |
| Advisory Services Network200 sh | 200 | $2.4K |
| Lloyd Advisory Services194 sh | 194 | $2.4K |
| Root Financial Partners34 sh | 34 | $415.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.