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ACNB Corp. ACNB

US equityMarket cap rank #3574Banks - Regional

$63.10 −$0.02 (-0.03%)

Market open · Oct 8, 12:30 pm ET · After hours $63.12 0.00%

Open$62.95

Prev close$63.12

Day range$62.34 – $63.22

Volume21.9K

Market cap$641.72M

P/E (TTM)11.9

Dividend yield2.41%

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership41.1%-0.15 pts vs. prior quarter

Institutions holding152+1 vs. prior quarter

Insider trades (recent)42 buys / 8 sellsNet buying

Short interest4.24% of floatDays to cover 6.2 · as of 15 Sep 2026

Short-sale volume share27.6%5-day average of daily volume

Short-sale volume as % of daily volume

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: +$2,006 (8 inflow days, 12 outflow days).

Net flow by order size, last 20 sessions

Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.

The five largest holders on file together own 21.6% of shares outstanding.

Largest holders

BlackRock6.93%
Vanguard Capital Management, LLC4.94%
Private Capital Management, LLC3.55%
Dimensional Fund Advisors3.48%
Geode Capital Management, LLC2.67%
American Century Investment Management2.59%
State Street Global Advisors2.22%
Bridgeway Capital Management, LLC1.68%

By investor type

Mutual Fund36.14%
Individual/Insider4.05%
Hedge Fund3.12%
Public Company0.96%
Private Company0.53%
Insurance Company0.14%
Government Pension Fund0.11%
Family Office/Trust0.11%

Reported short interest has risen from 2.31% to 4.24% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Recent institutional activity

Holder	Type	Period	Share change	New stake
ALPS Advisors, Inc.	Mutual Fund	2026/Q3	+8,930	0.1%
Nuveen Asset Management LLC	Insurance Company	2026/Q3	+13,657	0.1%
BlackRock	Mutual Fund	2026/Q3	+82,553	6.9%
American Century Investment Management	Mutual Fund	2026/Q3	+79,709	2.6%
Two Sigma Investments, LP	Hedge Fund	2026/Q3	+60,228	1.0%
State Street Global Advisors	Mutual Fund	2026/Q3	+30,177	2.2%
AQR Capital Management	Hedge Fund	2026/Q3	+28,577	0.4%
Goldman Sachs Asset Management, L.P.	Mutual Fund	2026/Q3	+28,412	0.3%
Geode Capital Management, LLC	Mutual Fund	2026/Q3	+25,399	2.7%
Dimensional Fund Advisors	Mutual Fund	2026/Q3	+18,819	3.5%
Acadian Asset Management LLC	Mutual Fund	2026/Q3	+16,708	0.2%
Van Hulzen Asset Management, LLC	Mutual Fund	2026/Q3	+13,003	0.1%
Vanguard Portfolio Management, LLC	Mutual Fund	2026/Q3	+10,582	0.7%
Susquehanna Fundamental Investments, LLC	Mutual Fund	2026/Q3	+7,761	0.1%
Vanguard Capital Management, LLC	Mutual Fund	2026/Q3	+7,113	4.9%

Institutional buy/sell activity by reporting period, largest moves first.

Insider transactions

Date	Insider	Title	Transaction	Shares	Price	Held after
14 Sep 2026	Frank Elsner	Independent Director	Other Acquisition	+157	$65.29	29,071
14 Sep 2026	Frank Elsner	Independent Director	Open Market Acquisition	+3	$65.29	29,071
14 Sep 2026	Alan Stock	Independent Chairperson	Other Acquisition	+210	$65.29	88,639
14 Sep 2026	James Lott	Independent Director	Other Acquisition	+157	$65.29	19,396
14 Sep 2026	John Polli	Director	Other Acquisition	+210	$65.29	36,344
14 Sep 2026	Donald Seibel	Director	Other Acquisition	+210	$65.29	18,527
14 Sep 2026	Donna Newell	Independent Director	Other Acquisition	+210	$65.29	12,909
14 Sep 2026	Kimberly Chaney	Independent Director	Other Acquisition	+157	$65.29	10,259
14 Sep 2026	Elizabeth Carson	Director	Other Acquisition	+157	$65.29	13,309
14 Sep 2026	Eugene Draganosky	Director	Other Acquisition	+157	$65.29	13,674
14 Sep 2026	Todd Herring	Independent Vice Chairperson	Other Acquisition	+210	$65.29	13,575
14 Sep 2026	Alexandra Chiaruttini	Director Nominee	Other Acquisition	+210	$65.29	3,452
6 Aug 2026	Donald Seibel	Director	Open Market Disposition	-1,500	$64.35	18,232
5 Aug 2026	Donald Seibel	Director	Intent to Sell (Form 144)	-1,500	$65.01	–
14 Jun 2026	Frank Elsner	Independent Director	Other Acquisition	+186	$56.51	28,840
14 Jun 2026	Alan Stock	Independent Chairperson	Other Acquisition	+243	$56.51	88,350
14 Jun 2026	James Lott	Independent Director	Other Acquisition	+182	$56.51	19,180
14 Jun 2026	John Polli	Director	Other Acquisition	+243	$56.51	36,124
14 Jun 2026	Donald Seibel	Director	Other Acquisition	+243	$56.51	19,732
14 Jun 2026	Donna Newell	Independent Director	Other Acquisition	+243	$56.51	12,642

From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.

Short interest, by report

Report date	Shares short	% of float	Days to cover
15 Sep 2026	431,401	4.2%	6.2
31 Aug 2026	409,589	4.0%	4.9
14 Aug 2026	335,284	3.3%	6.6
31 Jul 2026	298,559	2.9%	3.6
15 Jul 2026	265,533	2.6%	4.4
30 Jun 2026	235,441	2.3%	2.3

Discussion

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