ACNB Institutional Ownership & Shareholders
ACNB CORP (ACNB) is currently held by 119 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $245.42M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of ACNB tracked by InsiderSet, reporting ownership valued at approximately $41.87M 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 $46.12M, representing an estimated gain of +10.14% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 72% of the total disclosed ACNB value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Capital Management Llc, Private Capital Management, 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
119
Total Reported Value
$245.42M
Largest Holder
Blackrock, Inc.
Largest Position
$41.87M
Insider Transactions (90d)
13
Latest Filing Quarter
Q2 2026
New Institutional Positions
136
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% | 705,130 | $41,870,620 | $46,115,502 | +$4,244,882 | +10.14% | |
| Vanguard Capital Management Llc | 0.00% | 434,952 | $25,827,450 | $28,445,861 | +$2,618,411 | +10.14% | |
| Private Capital Management, Llc | 1.95% | 361,337 | $21,456,191 | $23,631,440 | +$2,175,249 | +10.14% | |
| Dimensional Fund Advisors Lp | 0.00% | 353,663 | $21,001,184 | $23,129,560 | +$2,128,376 | +10.13% | |
| Geode Capital Management, Llc | 0.00% | 271,775 | $16,141,277 | $17,774,085 | +$1,632,808 | +10.12% | |
| American Century Companies Inc | 0.01% | 263,329 | $15,636,476 | $17,221,717 | +$1,585,241 | +10.14% | |
| State Street Corp | 0.00% | 225,755 | $13,405,332 | $14,764,377 | +$1,359,045 | +10.14% | |
| Manufacturers Life Insurance Company, The | 0.01% | 161,818 | $9,608,753 | $10,582,897 | +$974,144 | +10.14% | |
| Bridgeway Capital Management, Llc | 0.11% | 106,511 | $6,324,623 | $6,965,819 | +$641,196 | +10.14% | |
| Two Sigma Investments, Lp | 0.00% | 98,822 | $5,868,050 | $6,462,959 | +$594,909 | +10.14% | |
| Northern Trust Corp | 0.00% | 97,997 | $5,819,062 | $6,409,004 | +$589,942 | +10.14% | |
| Vanguard Portfolio Management Llc | 0.00% | 68,788 | $4,084,631 | $4,498,735 | +$414,104 | +10.14% | |
| Vanguard Fiduciary Trust Co | 0.00% | 67,267 | $3,994,314 | $4,399,262 | +$404,948 | +10.14% | |
| Maltese Capital Management Llc | 0.70% | 65,000 | $3,859,700 | $4,251,000 | +$391,300 | +10.14% | |
| Empowered Funds, Llc | 0.02% | 64,319 | $3,819,262 | $4,206,463 | +$387,201 | +10.14% | |
| Citadel Advisors Llc | 0.00% | 42,927 | $2,549,005 | $2,807,426 | +$258,421 | +10.14% | |
| Bank Of New York Mellon Corp | 0.00% | 41,447 | $2,461,152 | $2,710,634 | +$249,482 | +10.14% | |
| Goldman Sachs Group Inc | 0.00% | 41,050 | $2,437,549 | $2,684,670 | +$247,121 | +10.14% | |
| Morgan Stanley | 0.00% | 39,846 | $2,366,112 | $2,605,928 | +$239,816 | +10.14% | |
| Aqr Capital Management Llc | 0.00% | 37,941 | $2,252,937 | $2,481,341 | +$228,404 | +10.14% | |
| Fisher Asset Management, Llc | 0.00% | 31,250 | $1,855,625 | $2,043,750 | +$188,125 | +10.14% | |
| Bank Of America Corp | 0.00% | 31,104 | $1,846,955 | $2,034,202 | +$187,247 | +10.14% | |
| Charles Schwab Investment Management Inc | 0.00% | 29,964 | $1,779,262 | $1,959,646 | +$180,384 | +10.14% | |
| Kestra Advisory Services, Llc | 0.00% | 23,847 | $1,485,643 | $1,559,594 | +$73,951 | +4.98% | |
| Millennium Management Llc | 0.00% | 24,512 | $1,455,523 | $1,603,085 | +$147,562 | +10.14% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 24,356 | $1,446,259 | $1,592,882 | +$146,623 | +10.14% |
| Quantinno Capital Management Lp | 0.00% | 17,304 | $1,027,512 | $1,131,682 | +$104,170 | +10.14% | |
| Acadian Asset Management Llc | 0.00% | 16,708 | $988,000 | $1,092,703 | +$104,703 | +10.60% | |
| Xtx Topco Ltd | 0.01% | 16,591 | $985,174 | $1,085,051 | +$99,877 | +10.14% | |
| Nuveen, Llc | 0.00% | 15,156 | $899,963 | $991,202 | +$91,239 | +10.14% | |
| Qube Research & Technologies Ltd | 0.00% | 14,626 | $868,492 | $956,540 | +$88,048 | +10.14% | |
| Rkl Wealth Management Llc | 0.07% | 13,413 | $835,638 | $877,210 | +$41,572 | +4.97% | |
| Rhumbline Advisers | 0.00% | 13,366 | $793,666 | $874,136 | +$80,470 | +10.14% | |
| Van Hulzen Asset Management, Llc | 0.05% | 13,003 | $772,119 | $850,396 | +$78,277 | +10.14% | |
| Mariner, Llc | 0.00% | 12,135 | $720,582 | $793,629 | +$73,047 | +10.14% | |
| Pinnacle Wealth Planning Services, Inc. | 0.07% | 11,363 | $707,915 | $743,140 | +$35,225 | +4.98% | |
| Captrust Financial Advisors | 0.00% | 11,841 | $703,100 | $774,401 | +$71,301 | +10.14% | |
| Invesco Ltd. | 0.00% | 11,271 | $669,272 | $737,123 | +$67,851 | +10.14% | |
| Equitable Trust Co | 0.03% | 10,125 | $630,788 | $662,175 | +$31,387 | +4.98% | |
| Thrivent Financial For Lutherans | 0.00% | 10,561 | $628,000 | $690,689 | +$62,689 | +9.98% | |
| Deutsche Bank Ag\ | 0.00% | 9,986 | $592,969 | $653,084 | +$60,115 | +10.14% | |
| Wells Fargo & Company/Mn | 0.00% | 9,016 | $535,391 | $589,646 | +$54,255 | +10.13% | |
| Lpl Financial Llc | 0.00% | 8,910 | $529,076 | $582,714 | +$53,638 | +10.14% | |
| Price T Rowe Associates Inc | 0.00% | 8,508 | $506,000 | $556,423 | +$50,423 | +9.97% | |
| Quadrature Capital Ltd | 0.00% | 8,009 | $475,574 | $523,789 | +$48,215 | +10.14% | |
| Susquehanna Fundamental Investments, Llc | 0.01% | 7,761 | $460,848 | $507,569 | +$46,721 | +10.14% | |
| Wealthspire Advisors, Llc | 0.00% | 7,617 | $452,298 | $498,152 | +$45,854 | +10.14% | |
| D. E. Shaw & Co., Inc. | 0.00% | 7,371 | $437,690 | $482,063 | +$44,373 | +10.14% | |
| Greenspring Advisors, Llc | 0.02% | 7,022 | $416,967 | $459,239 | +$42,272 | +10.14% | |
| Equitable Holdings, Inc. | 0.00% | 6,242 | $370,641 | $408,227 | +$37,586 | +10.14% |
Frequently asked questions about ACNB
Who are the largest institutional holders of ACNB?
The largest institutional holders of ACNB reported in the latest SEC Form 13F filings include Blackrock, Inc., Vanguard Capital Management Llc, Private Capital Management, Llc, Dimensional Fund Advisors Lp, and Geode Capital Management, Llc. InsiderSet ranks institutional holders by their latest reported ACNB position.
What is ACNB institutional ownership?
This page tracks ACNB positions reported by institutional investment managers through SEC Form 13F. ACNB CORP (ACNB) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own ACNB?
InsiderSet currently tracks 119 institutional managers reporting ACNB 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 ACNB shareholders.
How much ACNB stock do institutions own?
Institutional investment managers disclosed approximately $245.42M in ACNB holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was ACNB institutional ownership last updated?
The latest ACNB 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 ACNB 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 ACNB position after the reporting date.
Are institutions buying or selling ACNB?
Institutional buying and selling can be analyzed by comparing ACNB positions across consecutive 13F reporting periods. InsiderSet's ACNB Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View ACNB ownership changes.
How has ACNB institutional ownership changed over time?
InsiderSet tracks ACNB institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.