ACNB CORP (ACNB) Top Institutional Shareholders
ACNB CORP (ACNB) 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 $196.55M in ACNB holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of ACNB tracked by InsiderSet, reporting ownership valued at approximately $29.80M 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 $34.97M, representing an estimated gain of +17.34% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 73% of the total disclosed ACNB value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Capital Management Llc, Fmr Llc, and several other long-term asset managers with concentrated positions in ACNB CORP (ACNB).
This page ranks the largest institutional ACNB 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
105
Total Reported Value
$196.55M
Largest Holder
Blackrock, Inc.
Largest Position
$29.80M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 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 |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 622,577 | $29,802,761 | $34,970,150 | +$5,167,389 | +17.34% | |
| Vanguard Capital Management Llc | 0.00% | 427,657 | $20,471,941 | $24,021,494 | +$3,549,553 | +17.34% | |
| Fmr Llc | 0.00% | 363,662 | $17,408,500 | $20,426,895 | +$3,018,395 | +17.34% | |
| Private Capital Management, Llc | 1.75% | 359,742 | $17,220,850 | $20,206,708 | +$2,985,858 | +17.34% | |
| Dimensional Fund Advisors Lp | 0.00% | 334,844 | $16,028,972 | $18,808,187 | +$2,779,215 | +17.34% | |
| Geode Capital Management, Llc | 0.00% | 246,376 | $11,796,489 | $13,838,940 | +$2,042,451 | +17.31% | |
| State Street Corp | 0.00% | 195,578 | $9,362,319 | $10,985,616 | +$1,623,297 | +17.34% | |
| American Century Companies Inc | 0.00% | 183,620 | $8,789,889 | $10,313,935 | +$1,524,046 | +17.34% | |
| Manufacturers Life Insurance Company, The | 0.01% | 162,978 | $7,801,757 | $9,154,474 | +$1,352,717 | +17.34% | |
| Bridgeway Capital Management, Llc | 0.10% | 106,157 | $5,081,736 | $5,962,839 | +$881,103 | +17.34% | |
| Northern Trust Corp | 0.00% | 92,569 | $4,431,278 | $5,199,601 | +$768,323 | +17.34% | |
| Maltese Capital Management Llc | 0.81% | 85,600 | $4,097,672 | $4,808,152 | +$710,480 | +17.34% | |
| Vanguard Fiduciary Trust Co | 0.00% | 67,449 | $3,228,784 | $3,788,610 | +$559,826 | +17.34% | |
| Empowered Funds, Llc | 0.02% | 59,757 | $2,860,568 | $3,356,551 | +$495,983 | +17.34% | |
| Vanguard Portfolio Management Llc | 0.00% | 58,206 | $2,786,321 | $3,269,431 | +$483,110 | +17.34% | |
| Morgan Stanley | 0.00% | 51,376 | $2,459,429 | $2,885,790 | +$426,361 | +17.34% | |
| Citadel Advisors Llc | 0.00% | 45,478 | $2,177,032 | $2,554,499 | +$377,467 | +17.34% | |
| Two Sigma Investments, Lp | 0.00% | 38,594 | $1,847,495 | $2,167,825 | +$320,330 | +17.34% | |
| Bank Of New York Mellon Corp | 0.00% | 37,274 | $1,784,327 | $2,093,681 | +$309,354 | +17.34% | |
| Bank Of America Corp | 0.00% | 33,187 | $1,588,661 | $1,864,114 | +$275,453 | +17.34% | |
| Stifel Financial Corp | 0.00% | 27,803 | $1,330,931 | $1,561,695 | +$230,764 | +17.34% | |
| Charles Schwab Investment Management Inc | 0.00% | 27,242 | $1,304,075 | $1,530,183 | +$226,108 | +17.34% | |
| Fisher Asset Management, Llc | 0.00% | 26,296 | $1,258,789 | $1,477,046 | +$218,257 | +17.34% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 24,556 | $1,175,496 | $1,379,311 | +$203,815 | +17.34% |
| Kestra Advisory Services, Llc | 0.00% | 24,158 | $1,156,440 | $1,356,955 | +$200,515 | +17.34% | |
| Alliancebernstein L.P. | 0.00% | 21,889 | $1,058,333 | $1,229,505 | +$171,172 | +16.17% | |
| Goldman Sachs Group Inc | 0.00% | 21,993 | $1,052,805 | $1,235,347 | +$182,542 | +17.34% | |
| Qube Research & Technologies Ltd | 0.00% | 20,385 | $975,830 | $1,145,025 | +$169,195 | +17.34% | |
| Millennium Management Llc | 0.00% | 20,121 | $963,192 | $1,130,197 | +$167,005 | +17.34% | |
| Marshall Wace, Llp | 0.00% | 17,220 | $824,322 | $967,247 | +$142,925 | +17.34% | |
| Commonwealth Equity Services, Llc | 0.00% | 14,774 | $707,249 | $829,856 | +$122,607 | +17.34% | |
| Invesco Ltd. | 0.00% | 13,685 | $655,101 | $768,686 | +$113,585 | +17.34% | |
| Rkl Wealth Management Llc | 0.06% | 13,405 | $641,698 | $752,959 | +$111,261 | +17.34% | |
| Nuveen, Llc | 0.00% | 13,142 | $629,108 | $738,186 | +$109,078 | +17.34% | |
| Quantinno Capital Management Lp | 0.00% | 13,012 | $622,884 | $730,884 | +$108,000 | +17.34% | |
| Rhumbline Advisers | 0.00% | 12,805 | $612,969 | $719,257 | +$106,288 | +17.34% | |
| Captrust Financial Advisors | 0.00% | 11,499 | $550,463 | $645,899 | +$95,436 | +17.34% | |
| Segall Bryant & Hamill, Llc | 0.01% | 11,692 | $548,004 | $656,740 | +$108,736 | +19.84% | |
| Pinnacle Wealth Planning Services, Inc. | 0.06% | 11,363 | $543,947 | $638,260 | +$94,313 | +17.34% | |
| Jane Street Group, Llc | 0.00% | 11,012 | $527,145 | $618,544 | +$91,399 | +17.34% | |
| Xtx Topco Ltd | 0.01% | 10,231 | $489,758 | $574,675 | +$84,917 | +17.34% | |
| Equitable Trust Co | 0.02% | 9,470 | $453,329 | $531,930 | +$78,601 | +17.34% | |
| Aqr Capital Management Llc | 0.00% | 9,282 | $444,330 | $521,370 | +$77,040 | +17.34% | |
| Lpl Financial Llc | 0.00% | 8,960 | $428,915 | $503,283 | +$74,368 | +17.34% | |
| Wealthspire Advisors, Llc | 0.00% | 7,617 | $364,626 | $427,847 | +$63,221 | +17.34% | |
| Greenspring Advisors, Llc | 0.02% | 7,022 | $336,143 | $394,426 | +$58,283 | +17.34% | |
| Franklin Resources Inc | 0.00% | 6,638 | $317,761 | $372,856 | +$55,095 | +17.34% | |
| Deutsche Bank Ag\ | 0.00% | 6,500 | $311,155 | $365,105 | +$53,950 | +17.34% | |
| Mariner, Llc | 0.00% | 6,462 | $309,336 | $362,971 | +$53,635 | +17.34% | |
| Equitable Holdings, Inc. | 0.00% | 6,228 | $301,124 | $349,827 | +$48,703 | +16.17% |
Frequently asked questions about ACNB
Who owns the most ACNB stock?
The largest holders of ACNB 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 ACNB CORP (ACNB).
Is ACNB widely held by superinvestors?
Many widely followed stocks like ACNB appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly ACNB 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.