EXPONENT INC (EXPO) Top Institutional Shareholders
EXPONENT INC (EXPO) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $2.97B in EXPO holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of EXPO tracked by InsiderSet, reporting ownership valued at approximately $395.99M in its March 31, 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 $345.98M, representing an estimated loss of -12.63% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 54% of the total disclosed EXPO value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Kayne Anderson Rudnick Investment Management Llc, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in EXPONENT INC (EXPO).
This page ranks the largest institutional EXPO 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
349
Total Reported Value
$2.97B
Largest Holder
Blackrock, Inc.
Largest Position
$395.99M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
54
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 6,068,812 | $395,989,982 | $345,982,972 | -$50,007,010 | -12.63% | |
| Kayne Anderson Rudnick Investment Management Llc | 0.74% | 3,886,308 | $253,581,628 | $221,558,419 | -$32,023,209 | -12.63% | |
| Vanguard Portfolio Management Llc | 0.01% | 2,946,756 | $192,275,829 | $167,994,560 | -$24,281,269 | -12.63% | |
| Vanguard Capital Management Llc | 0.00% | 2,210,650 | $144,244,913 | $126,029,157 | -$18,215,757 | -12.63% | |
| Conestoga Capital Advisors, Llc | 2.48% | 1,906,505 | $124,399,422 | $108,689,850 | -$15,709,572 | -12.63% | |
| State Street Corp | 0.00% | 1,889,536 | $123,292,224 | $107,722,447 | -$15,569,777 | -12.63% | |
| Geneva Capital Management Llc | 2.49% | 1,795,507 | $117,156,829 | $102,361,854 | -$14,794,975 | -12.63% | |
| Geode Capital Management, Llc | 0.01% | 1,647,614 | $107,521,185 | $93,930,474 | -$13,590,711 | -12.64% | |
| Royce & Associates Lp | 0.74% | 1,144,873 | $74,702,963 | $65,269,210 | -$9,433,753 | -12.63% | |
| Two Sigma Investments, Lp | 0.06% | 1,101,306 | $71,860,217 | $62,785,455 | -$9,074,762 | -12.63% | |
| Morgan Stanley | 0.00% | 1,072,008 | $69,948,627 | $61,115,176 | -$8,833,451 | -12.63% | |
| Aqr Capital Management Llc | 0.03% | 981,274 | $64,028,152 | $55,942,431 | -$8,085,721 | -12.63% | |
| First Trust Advisors Lp | 0.04% | 964,814 | $62,954,113 | $55,004,046 | -$7,950,067 | -12.63% | |
| Dimensional Fund Advisors Lp | 0.01% | 918,885 | $59,957,870 | $52,385,634 | -$7,572,236 | -12.63% | |
| Goldman Sachs Group Inc | 0.01% | 778,596 | $50,803,409 | $44,387,758 | -$6,415,651 | -12.63% | |
| Neuberger Berman Group Llc | 0.04% | 724,076 | $47,245,959 | $41,279,573 | -$5,966,386 | -12.63% | |
| Resona Asset Management Co.,Ltd. | 0.22% | 691,256 | $45,102,373 | $39,408,505 | -$5,693,868 | -12.62% | |
| Northern Trust Corp | 0.01% | 663,765 | $43,310,668 | $37,841,243 | -$5,469,425 | -12.63% | |
| Wells Fargo & Company/Mn | 0.01% | 612,893 | $39,991,279 | $34,941,030 | -$5,050,249 | -12.63% | |
| Invesco Ltd. | 0.01% | 572,262 | $37,340,096 | $32,624,657 | -$4,715,439 | -12.63% | |
| Bank Of America Corp | 0.00% | 539,793 | $35,221,493 | $30,773,599 | -$4,447,894 | -12.63% | |
| Charles Schwab Investment Management Inc | 0.01% | 524,052 | $34,194,393 | $29,876,205 | -$4,318,188 | -12.63% | |
| Millennium Management Llc | 0.03% | 520,151 | $33,939,853 | $29,653,809 | -$4,286,044 | -12.63% | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.05% | 517,610 | $33,774,045 | $29,508,946 | -$4,265,099 | -12.63% | |
| Bamco Inc | 0.10% | 496,733 | $32,411,828 | $28,318,748 | -$4,093,080 | -12.63% | |
| Bank Of New York Mellon Corp | 0.01% | 454,923 | $29,683,743 | $25,935,160 | -$3,748,583 | -12.63% | |
| Raymond James Financial Inc | 0.01% | 402,267 | $26,247,954 | $22,933,242 | -$3,314,712 | -12.63% | |
| Deutsche Bank Ag\ | 0.01% | 365,985 | $23,880,521 | $20,864,805 | -$3,015,716 | -12.63% | |
| Ubs Group Ag | 0.00% | 357,710 | $23,340,578 | $20,393,047 | -$2,947,531 | -12.63% | |
| Vanguard Fiduciary Trust Co | 0.01% | 346,626 | $22,617,347 | $19,761,148 | -$2,856,199 | -12.63% | |
| Envestnet Asset Management Inc | 0.01% | 325,706 | $21,252,333 | $18,568,499 | -$2,683,834 | -12.63% | |
| Roffman Miller Associates Inc | 1.09% | 289,108 | $18,864,278 | $16,482,047 | -$2,382,231 | -12.63% | |
| Fifth Third Bancorp | 0.03% | 280,639 | $18,311,650 | $15,999,229 | -$2,312,421 | -12.63% | |
| Voloridge Investment Management, Llc | 0.07% | 272,963 | $17,810,836 | $15,561,621 | -$2,249,215 | -12.63% | |
| Fenimore Asset Management Inc | 0.38% | 259,140 | $16,908,885 | $14,773,571 | -$2,135,314 | -12.63% | |
| Sei Investments Co | 0.01% | 226,271 | $14,765,923 | $12,899,710 | -$1,866,213 | -12.64% | |
| Eulav Asset Management | 0.47% | 223,100 | $14,557,275 | $12,718,931 | -$1,838,344 | -12.63% | |
| Nuveen, Llc | 0.00% | 221,632 | $14,461,488 | $12,635,240 | -$1,826,248 | -12.63% | |
| Jane Street Group, Llc | 0.01% | 209,953 | $13,699,434 | $11,969,421 | -$1,730,013 | -12.63% | |
| Barclays Plc | 0.00% | 199,229 | $12,999,693 | $11,358,045 | -$1,641,648 | -12.63% | |
| D. E. Shaw & Co., Inc. | 0.01% | 192,096 | $12,534,264 | $10,951,393 | -$1,582,871 | -12.63% | |
| Montanaro Asset Management Ltd | 3.74% | 191,800 | $12,514,950 | $10,934,518 | -$1,580,432 | -12.63% | |
| Royal Bank Of Canada | 0.00% | 178,964 | $11,678,000 | $10,202,738 | -$1,475,262 | -12.63% | |
| Principal Financial Group Inc | 0.01% | 177,308 | $11,569,347 | $10,108,329 | -$1,461,018 | -12.63% | |
| Bli - Banque De Luxembourg Investments | 0.34% | 162,649 | $11,239,792 | $9,272,619 | -$1,967,173 | -17.50% | |
| Rhumbline Advisers | 0.01% | 158,247 | $10,325,591 | $9,021,661 | -$1,303,930 | -12.63% | |
| Trexquant Investment Lp | 0.07% | 152,663 | $9,961,261 | $8,703,318 | -$1,257,943 | -12.63% | |
| Canada Pension Plan Investment Board | 0.01% | 150,500 | $9,820,125 | $8,580,005 | -$1,240,120 | -12.63% | |
| Bnp Paribas Financial Markets | 0.01% | 141,500 | $9,232,875 | $8,066,915 | -$1,165,960 | -12.63% | |
| Ameriprise Financial Inc | 0.00% | 124,850 | $8,146,482 | $7,117,699 | -$1,028,784 | -12.63% |
Frequently asked questions about EXPO
Who owns the most EXPO stock?
The largest holders of EXPO 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 EXPONENT INC (EXPO).
Is EXPO widely held by superinvestors?
Many widely followed stocks like EXPO appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly EXPO 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.