ACNB Corporation (ACNB) Ownership
ACNB ownership summary
as of October 18, 2026- Institutions
- 41.5% of shares outstanding
- Insiders
- 3.92% of shares outstanding
- Shares outstanding
- 10.2M
- Float
- 9.8M shares available to trade
- Short interest
- 5.72% 559K shares short
- Days to cover
- 7.78 short interest up 29.6% vs prior month
- Institutions 41.45%
- Insiders 3.92%
- Other investors 54.62%
ACNB top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 6.93% | 705K | $44.7M | +82,553 (+13.3%) | June 30, 2026 |
| 2 | Vanguard Capital Management, LLC | 4.28% | 435K | $27.5M | +7,295 (+1.7%) | June 30, 2026 |
| 3 | Private Capital Management, LLC | 3.55% | 361K | $22.9M | +1,595 (+0.4%) | June 30, 2026 |
| 4 | Dimensional Fund Advisors, Inc. | 3.48% | 354K | $22.4M | +18,819 (+5.6%) | June 30, 2026 |
| 5 | Geode Capital Management, LLC | 2.67% | 272K | $17.2M | +25,399 (+10.3%) | June 30, 2026 |
| 6 | American Century Companies Inc | 2.59% | 263K | $16.7M | +79,709 (+43.4%) | June 30, 2026 |
| 7 | State Street Corp | 2.22% | 226K | $14.3M | +30,177 (+15.4%) | June 30, 2026 |
| 8 | Manufacturers Life Insurance Co | 1.59% | 162K | $10.2M | −1,160 (−0.7%) | June 30, 2026 |
| 9 | Bridgeway Capital Management, LLC | 1.05% | 107K | $6.7M | +354 (+0.3%) | June 30, 2026 |
| 10 | Two Sigma Investments LLC | 0.97% | 99K | $6.3M | +60,228 (+156.1%) | June 30, 2026 |
| 11 | Northern Trust Corp | 0.96% | 98K | $6.2M | +5,428 (+5.9%) | June 30, 2026 |
| 12 | Vanguard Portfolio Management, LLC | 0.68% | 69K | $4.4M | +10,582 (+18.2%) | June 30, 2026 |
| 13 | Vanguard Fiduciary Trust Co | 0.66% | 67K | $4.3M | −182 (−0.3%) | June 30, 2026 |
| 14 | Maltese Capital Management LLC | 0.64% | 65K | $4.1M | −20,600 (−24.1%) | June 30, 2026 |
| 15 | Empowered Funds, LLC | 0.63% | 64K | $4.1M | +4,562 (+7.6%) | June 30, 2026 |
| 16 | Citadel Advisors Llc | 0.42% | 43K | $2.7M | −2,551 (−5.6%) | June 30, 2026 |
| 17 | Bank of New York Mellon Corp | 0.41% | 41K | $2.6M | +4,173 (+11.2%) | June 30, 2026 |
| 18 | The Goldman Sachs Group Inc | 0.40% | 41K | $2.6M | +19,057 (+86.7%) | June 30, 2026 |
| 19 | Morgan Stanley - Brokerage Accounts | 0.39% | 40K | $2.5M | −11,530 (−22.4%) | June 30, 2026 |
| 20 | AQR Capital Management LLC | 0.37% | 38K | $2.4M | +28,659 (+308.7%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 15 holders added 379K shares and 5 cut 36K.
ACNB top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 3.00% | 305K | $19.3M | — | August 31, 2026 |
| 2 | iShares Russell 2000 ETF | 2.72% | 276K | $17.5M | +4,098 (+1.5%) | September 30, 2026 |
| 3 | Avantis US Small Cap Value ETF | 2.65% | 270K | $17.1M | +552 (+0.2%) | September 30, 2026 |
| 4 | Fidelity Small Cap Index | 1.10% | 112K | $7.1M | +889 (+0.8%) | July 31, 2026 |
| 5 | iShares Russell 2000 Value ETF | 0.97% | 99K | $6.3M | +150 (+0.2%) | September 30, 2026 |
| 6 | State Street® SPDR® S&PRgnllBkgETF | 0.77% | 79K | $5.0M | +2,336 (+3.1%) | September 30, 2026 |
| 7 | JHancock Regional Bank A | 0.76% | 78K | $4.9M | — | August 31, 2026 |
| 8 | JH Financial Opportunities | 0.70% | 71K | $4.5M | — | August 31, 2026 |
| 9 | EA Bridgeway Omni Small-Cap Value ETF | 0.61% | 62K | $3.9M | −816 (−1.3%) | September 30, 2026 |
| 10 | Vanguard Russell 2000 ETF | 0.58% | 59K | $3.7M | +1,353 (+2.4%) | August 31, 2026 |
| 11 | DFA US Targeted Value I | 0.50% | 50K | $3.2M | — | August 31, 2026 |
| 12 | Fidelity Extended Market Index | 0.48% | 49K | $3.1M | −2,883 (−5.5%) | August 31, 2026 |
| 13 | First Trust Dow Jones Sel MicroCap ETF | 0.43% | 44K | $2.8M | — | September 30, 2026 |
| 14 | Dimensional US Targeted Value ETF | 0.43% | 43K | $2.7M | — | September 30, 2026 |
| 15 | Bridgeway Omni Small-Cap Value N | 0.41% | 42K | $2.7M | −4,208 (−9.1%) | June 30, 2026 |
| 16 | DFA US Small Cap Value I | 0.39% | 40K | $2.5M | +4,560 (+13.0%) | August 31, 2026 |
| 17 | DFA US Small Cap I | 0.36% | 37K | $2.3M | — | August 31, 2026 |
| 18 | Dimensional US Small Cap ETF | 0.33% | 34K | $2.1M | — | September 30, 2026 |
| 19 | Private Capital Management Value I | 0.33% | 34K | $2.1M | — | June 30, 2026 |
| 20 | DFA US Micro Cap I | 0.32% | 33K | $2.1M | +811 (+2.5%) | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
ACNB insider transactions
latest 10| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-13 | Frank Elsner III | Buy | $46.42 | 5 | $232 |
| 2026-02-03 | Kevin J Hayes | Sell | $51.30 | 750 | $38,475 |
| 2026-01-26 | Brett D Fulk | Sell | $48.52 | 1,486 | $72,101 |
| 2025-12-15 | Brett D Fulk | Sell | $52.27 | 2,773 | $144,945 |
| 2025-12-15 | Frank Elsner III | Buy | $52.65 | 5 | $263 |
| 2025-12-11 | Donald Arthur Seibel Jr | Sell | $51.00 | 5,000 | $255,000 |
| 2025-11-20 | Scott L Kelley | Buy | $40.00 | 396 | $15,840 |
| 2025-09-15 | Frank Elsner III | Buy | $44.83 | 6 | $269 |
| 2025-09-15 | James J Lott | Buy | $44.83 | 251 | $11,252 |
| 2025-06-13 | Frank Elsner III | Buy | $40.97 | 6 | $246 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
ACNB shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns ACNB
Institutional investors own 41.5% of ACNB's shares and insiders 3.92%. The largest holder is BlackRock Inc with 6.93% of the shares (705K), as of June 30, 2026. Among the top 20 institutions, 15 added shares and 5 reduced their stake in the latest filings. Short interest is 5.72% of the float, or 7.78 days of average trading volume. The share count rose 72.6% since 2014.
Related: ACNB analyst forecast, ACNB key metrics, ACNB dividend history. See the ACNB stock overview for the latest quote and news.
ACNB ownership FAQ
Who owns the most ACNB stock?
The largest shareholders of ACNB are BlackRock Inc (6.93%), Vanguard Capital Management, LLC (4.28%), Private Capital Management, LLC (3.55%), Dimensional Fund Advisors, Inc. (3.48%), Geode Capital Management, LLC (2.67%).
What percentage of ACNB is owned by institutions?
Institutions hold 41.5% of ACNB's shares outstanding; insiders hold 3.92%.
Which funds own ACNB?
The largest fund holders of ACNB are Vanguard MStar Total Stk Mkt Idx Invest (3.00%), iShares Russell 2000 ETF (2.72%), Avantis US Small Cap Value ETF (2.65%), Fidelity Small Cap Index (1.10%), iShares Russell 2000 Value ETF (0.97%).
What is ACNB's short interest?
559K shares of ACNB were sold short, 5.72% of the float; at the average daily volume it would take 7.78 days to cover.
Are insiders buying or selling ACNB?
Of the latest 10 reported insider transactions in ACNB (since June 13, 2025), 6 were purchases and 4 were sales.
How many shares of ACNB are outstanding?
ACNB has 10.2M shares outstanding, of which 9.8M are in the public float.