GEOSPACE TECHNOLOGIES CORP (GEOS) Institutional Shareholders
GEOSPACE TECHNOLOGIES CORP (GEOS) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $28.55M in GEOS holdings during the latest filing period.
Grace & White Inc is currently the largest disclosed institutional shareholder of GEOS tracked by InsiderSet, reporting ownership valued at approximately $4.56M in its June 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 $3.43M, representing an estimated loss of -24.67% 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
84
Total Reported Value
$28.55M
Largest Holder
Grace & White Inc
Largest Position
$4.56M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
116
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Grace & White Inc | 0.72% | 673,236 | $4,557,808 | $3,433,504 | -$1,124,304 | -24.67% | |
| Vanguard Capital Management Llc | 0.00% | 515,067 | $3,487,004 | $2,626,842 | -$860,162 | -24.67% | |
| Dimensional Fund Advisors Lp | 0.00% | 392,423 | $2,656,532 | $2,001,357 | -$655,175 | -24.66% | |
| Marshall Wace, Llp | 0.00% | 301,916 | $2,043,972 | $1,539,772 | -$504,200 | -24.67% | |
| Blackrock, Inc. | 0.00% | 231,765 | $1,569,049 | $1,182,002 | -$387,048 | -24.67% | |
| Us Bancorp \De\ | 0.00% | 212,766 | $1,440,426 | $1,085,107 | -$355,319 | -24.67% | |
| Sei Investments Co | 0.00% | 199,365 | $1,349,701 | $1,016,761 | -$332,940 | -24.67% | |
| Geode Capital Management, Llc | 0.00% | 164,180 | $1,112,129 | $837,318 | -$274,811 | -24.71% | |
| State Street Corp | 0.00% | 163,075 | $1,104,018 | $831,683 | -$272,336 | -24.67% | |
| De Lisle Partners Llp | 0.11% | 147,133 | $998,297 | $750,378 | -$247,919 | -24.83% | |
| Robotti Robert | 0.14% | 128,436 | $869,512 | $655,024 | -$214,488 | -24.67% | |
| Two Sigma Investments, Lp | 0.00% | 82,184 | $556,386 | $419,138 | -$137,248 | -24.67% | |
| Bridgeway Capital Management, Llc | 0.01% | 79,693 | $539,522 | $406,434 | -$133,088 | -24.67% | |
| Vanguard Fiduciary Trust Co | 0.00% | 76,586 | $518,487 | $390,589 | -$127,898 | -24.67% | |
| Glenorchy Capital Ltd | 0.29% | 68,488 | $463,666 | $349,289 | -$114,377 | -24.67% | |
| Citadel Advisors Llc | 0.00% | 58,018 | $392,782 | $295,892 | -$96,890 | -24.67% | |
| Eagleclaw Capital Managment, Llc | 0.05% | 50,015 | $338,602 | $255,076 | -$83,526 | -24.67% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 44,299 | $299,904 | $225,925 | -$73,979 | -24.67% |
| Acadian Asset Management Llc | 0.00% | 42,713 | $286,000 | $217,836 | -$68,164 | -23.83% | |
| Ironwood Investment Management Llc | 0.08% | 36,279 | $245,609 | $185,023 | -$60,586 | -24.67% | |
| Jacobs Levy Equity Management, Inc | 0.00% | 35,573 | $240,829 | $181,422 | -$59,407 | -24.67% | |
| Susquehanna International Group, Llp | 0.00% | 33,029 | $223,606 | $168,448 | -$55,158 | -24.67% | |
| Kingsview Wealth Management, Llc | 0.00% | 31,283 | $211,786 | $159,543 | -$52,243 | -24.67% | |
| Hrt Financial Lp | 0.00% | 30,656 | $207,000 | $156,346 | -$50,654 | -24.47% | |
| Northern Trust Corp | 0.00% | 28,717 | $194,414 | $146,457 | -$47,957 | -24.67% | |
| American Century Companies Inc | 0.00% | 28,201 | $190,921 | $143,825 | -$47,096 | -24.67% | |
| Goldman Sachs Group Inc | 0.00% | 25,800 | $174,666 | $131,580 | -$43,086 | -24.67% | |
| Mraz, Amerine & Associates, Inc. | 0.02% | 24,385 | $165,086 | $124,363 | -$40,723 | -24.67% | |
| Elevation Point Wealth Partners, Llc | 0.00% | 24,313 | $164,599 | $123,996 | -$40,603 | -24.67% | |
| Vestmark Advisory Solutions, Inc. | 0.00% | 24,313 | $164,599 | $123,996 | -$40,603 | -24.67% | |
| Imc-Chicago, Llc | 0.00% | 23,132 | $156,604 | $117,973 | -$38,631 | -24.67% | |
| Commonwealth Equity Services, Llc | 0.00% | 22,496 | $152,300 | $114,730 | -$37,570 | -24.67% | |
| Jane Street Group, Llc | 0.00% | 21,271 | $144,005 | $108,482 | -$35,523 | -24.67% | |
| Empowered Funds, Llc | 0.00% | 20,291 | $137,370 | $103,484 | -$33,886 | -24.67% | |
| Tannin Capital Llc | 0.09% | 19,657 | $133,078 | $100,251 | -$32,827 | -24.67% | |
| Axq Capital, Lp | 0.01% | 19,637 | $132,942 | $100,149 | -$32,793 | -24.67% | |
| Moors & Cabot, Inc. | 0.01% | 19,500 | $132,015 | $99,450 | -$32,565 | -24.67% | |
| Gsa Capital Partners Llp | 0.01% | 15,498 | $105,000 | $79,040 | -$25,960 | -24.72% | |
| Morgan Stanley | 0.00% | 15,255 | $103,277 | $77,801 | -$25,477 | -24.67% | |
| Xtx Topco Ltd | 0.00% | 13,435 | $90,955 | $68,519 | -$22,437 | -24.67% | |
| Invesco Ltd. | 0.00% | 12,680 | $85,844 | $64,668 | -$21,176 | -24.67% | |
| Wells Fargo & Company/Mn | 0.00% | 12,448 | $84,273 | $63,485 | -$20,788 | -24.67% | |
| Hub Investment Partners, Llc | 0.00% | 10,000 | $67,700 | $51,000 | -$16,700 | -24.67% | |
| Ubs Group Ag | 0.00% | 7,336 | $49,664 | $37,414 | -$12,250 | -24.67% | |
| Vanguard Global Advisers, Llc | 0.00% | 5,026 | $34,026 | $25,633 | -$8,393 | -24.67% | |
| Arax Advisory Partners | 0.00% | 4,660 | $31,549 | $23,766 | -$7,783 | -24.67% | |
| Simplex Trading, Llc | 0.00% | 2,075 | $14,047 | $10,583 | -$3,465 | -24.66% | |
| Pnc Financial Services Group, Inc. | 0.00% | 2,000 | $13,540 | $10,200 | -$3,340 | -24.67% | |
| Sbi Securities Co., Ltd. | 0.00% | 1,611 | $10,906 | $8,216 | -$2,690 | -24.66% | |
| Jpmorgan Chase & Co | 0.00% | 1,621 | $10,618 | $8,267 | -$2,351 | -22.14% |
Frequently asked questions about GEOS
Who owns the most GEOS stock?
The largest holders of GEOS are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for GEOSPACE TECHNOLOGIES CORP (GEOS).
Is GEOS widely held by superinvestors?
Many widely followed stocks like GEOS appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly GEOS is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.