GEOS Institutional Ownership & Shareholders
GEOSPACE TECHNOLOGIES CORP (GEOS) is currently held by 80 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $27.76M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Grace & White Inc is currently the largest disclosed institutional shareholder of GEOS tracked by InsiderSet, reporting ownership valued at approximately $3.88M in its September 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $3.50M, representing an estimated loss of -9.82% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 71% of the total disclosed GEOS value among the investors covered in this analysis. Major shareholders include Grace & White Inc, Vanguard Capital Management Llc, Dimensional Fund Advisors Lp, and several other long-term asset managers with concentrated positions in GEOSPACE TECHNOLOGIES CORP (GEOS).
This page ranks the largest institutional GEOS shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
80
Total Reported Value
$27.76M
Largest Holder
Grace & White Inc
Largest Position
$3.88M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
117
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Grace & White Inc | 0.64% | 793,498 | $3,880,205 | $3,499,326 | -$380,879 | -9.82% | |
| Vanguard Capital Management Llc | 0.00% | 515,067 | $3,487,004 | $2,271,445 | -$1,215,559 | -34.86% | |
| Dimensional Fund Advisors Lp | 0.00% | 392,423 | $2,656,532 | $1,730,585 | -$925,947 | -34.86% | |
| Marshall Wace, Llp | 0.00% | 301,916 | $2,043,972 | $1,331,450 | -$712,522 | -34.86% | |
| Blackrock, Inc. | 0.00% | 231,765 | $1,569,049 | $1,022,084 | -$546,965 | -34.86% | |
| Us Bancorp \De\ | 0.00% | 212,766 | $1,440,426 | $938,298 | -$502,128 | -34.86% | |
| Sei Investments Co | 0.00% | 199,365 | $1,349,701 | $879,200 | -$470,501 | -34.86% | |
| Geode Capital Management, Llc | 0.00% | 164,180 | $1,112,129 | $724,034 | -$388,095 | -34.90% | |
| State Street Corp | 0.00% | 163,075 | $1,104,018 | $719,161 | -$384,857 | -34.86% | |
| De Lisle Partners Llp | 0.11% | 147,133 | $998,297 | $648,857 | -$349,440 | -35.00% | |
| Robotti Robert | 0.14% | 128,436 | $869,512 | $566,403 | -$303,109 | -34.86% | |
| Two Sigma Investments, Lp | 0.00% | 82,184 | $556,386 | $362,431 | -$193,955 | -34.86% | |
| Bridgeway Capital Management, Llc | 0.01% | 79,693 | $539,522 | $351,446 | -$188,076 | -34.86% | |
| Vanguard Fiduciary Trust Co | 0.00% | 76,586 | $518,487 | $337,744 | -$180,743 | -34.86% | |
| Glenorchy Capital Ltd | 0.29% | 68,488 | $463,666 | $302,032 | -$161,634 | -34.86% | |
| Citadel Advisors Llc | 0.00% | 58,018 | $392,782 | $255,859 | -$136,923 | -34.86% | |
| Eagleclaw Capital Managment, Llc | 0.05% | 50,015 | $338,602 | $220,566 | -$118,036 | -34.86% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 44,299 | $299,904 | $195,359 | -$104,545 | -34.86% |
| Acadian Asset Management Llc | 0.00% | 42,713 | $286,000 | $188,364 | -$97,636 | -34.14% | |
| Ironwood Investment Management Llc | 0.08% | 36,279 | $245,609 | $159,990 | -$85,619 | -34.86% | |
| Jacobs Levy Equity Management, Inc | 0.00% | 35,573 | $240,829 | $156,877 | -$83,952 | -34.86% | |
| Susquehanna International Group, Llp | 0.00% | 33,029 | $223,606 | $145,658 | -$77,948 | -34.86% | |
| Kingsview Wealth Management, Llc | 0.00% | 31,283 | $211,786 | $137,958 | -$73,828 | -34.86% | |
| Hrt Financial Lp | 0.00% | 30,656 | $207,000 | $135,193 | -$71,807 | -34.69% | |
| Northern Trust Corp | 0.00% | 28,717 | $194,414 | $126,642 | -$67,772 | -34.86% | |
| American Century Companies Inc | 0.00% | 28,201 | $190,921 | $124,366 | -$66,555 | -34.86% | |
| Goldman Sachs Group Inc | 0.00% | 25,800 | $174,666 | $113,778 | -$60,888 | -34.86% | |
| Elevation Point Wealth Partners, Llc | 0.00% | 24,313 | $164,599 | $107,220 | -$57,379 | -34.86% | |
| Vestmark Advisory Solutions, Inc. | 0.00% | 24,313 | $164,599 | $107,220 | -$57,379 | -34.86% | |
| Imc-Chicago, Llc | 0.00% | 23,132 | $156,604 | $102,012 | -$54,592 | -34.86% | |
| Jane Street Group, Llc | 0.00% | 21,271 | $144,005 | $93,805 | -$50,200 | -34.86% | |
| Empowered Funds, Llc | 0.00% | 20,291 | $137,370 | $89,483 | -$47,887 | -34.86% | |
| Tannin Capital Llc | 0.09% | 19,657 | $133,078 | $86,687 | -$46,391 | -34.86% | |
| Axq Capital, Lp | 0.01% | 19,637 | $132,942 | $86,599 | -$46,343 | -34.86% | |
| Moors & Cabot, Inc. | 0.01% | 19,500 | $132,015 | $85,995 | -$46,020 | -34.86% | |
| Mraz, Amerine & Associates, Inc. | 0.02% | 24,485 | $119,732 | $107,979 | -$11,753 | -9.82% | |
| Gsa Capital Partners Llp | 0.01% | 15,498 | $105,000 | $68,346 | -$36,654 | -34.91% | |
| Morgan Stanley | 0.00% | 15,255 | $103,277 | $67,275 | -$36,002 | -34.86% | |
| Commonwealth Equity Services, Llc | 0.00% | 20,296 | $99,250 | $89,505 | -$9,745 | -9.82% | |
| Xtx Topco Ltd | 0.00% | 13,435 | $90,955 | $59,248 | -$31,707 | -34.86% | |
| Invesco Ltd. | 0.00% | 12,680 | $85,844 | $55,919 | -$29,925 | -34.86% | |
| Wells Fargo & Company/Mn | 0.00% | 12,448 | $84,273 | $54,896 | -$29,377 | -34.86% | |
| Hub Investment Partners, Llc | 0.00% | 10,000 | $67,700 | $44,100 | -$23,600 | -34.86% | |
| Ubs Group Ag | 0.00% | 7,336 | $49,664 | $32,352 | -$17,312 | -34.86% | |
| Vanguard Global Advisers, Llc | 0.00% | 5,026 | $34,026 | $22,165 | -$11,861 | -34.86% | |
| Arax Advisory Partners | 0.00% | 4,660 | $31,549 | $20,551 | -$10,998 | -34.86% | |
| Simplex Trading, Llc | 0.00% | 2,075 | $14,047 | $9,151 | -$4,896 | -34.86% | |
| Pnc Financial Services Group, Inc. | 0.00% | 2,000 | $13,540 | $8,820 | -$4,720 | -34.86% | |
| Jpmorgan Chase & Co | 0.00% | 1,621 | $10,618 | $7,149 | -$3,469 | -32.67% | |
| Osaic Holdings, Inc. | 0.00% | 1,377 | $9,321 | $6,073 | -$3,248 | -34.85% |
Frequently asked questions about GEOS
Who are the largest institutional holders of GEOS?
The largest institutional holders of GEOS reported in the latest SEC Form 13F filings include Grace & White Inc, Vanguard Capital Management Llc, Dimensional Fund Advisors Lp, Marshall Wace, Llp, and Blackrock, Inc.. InsiderSet ranks institutional holders by their latest reported GEOS position.
What is GEOS institutional ownership?
This page tracks GEOS positions reported by institutional investment managers through SEC Form 13F. GEOSPACE TECHNOLOGIES CORP (GEOS) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own GEOS?
InsiderSet currently tracks 80 institutional managers reporting GEOS holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of GEOS shareholders.
How much GEOS stock do institutions own?
Institutional investment managers disclosed approximately $27.76M in GEOS holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was GEOS institutional ownership last updated?
The latest GEOS institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional GEOS holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its GEOS position after the reporting date.
Are institutions buying or selling GEOS?
Institutional buying and selling can be analyzed by comparing GEOS positions across consecutive 13F reporting periods. InsiderSet's GEOS Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View GEOS ownership changes.
How has GEOS institutional ownership changed over time?
InsiderSet tracks GEOS institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.