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Investar Holding Corp
ISTR

111 hedge funds and large institutions have $209M invested in Investar Holding Corp in 2026 Q1 according to their latest regulatory filings, with 23 funds opening new positions, 42 increasing their positions, 25 reducing their positions, and 11 closing their positions.

New
Increased
Maintained
Reduced
Closed

109% more first-time investments, than exits

New positions opened: 23 | Existing positions closed: 11

68% more repeat investments, than reductions

Existing positions increased: 42 | Existing positions reduced: 25

20% more capital invested

Capital invested by funds: $174M → $209M (+$35.1M)

11% more funds holding

Funds holding: 100 → 111 (+11)

0% more funds holding in top 10

Funds holding in top 10: 1 → 1 (0)

10.48% less ownership

Funds ownership: 66.22% → 55.74% (-10%)

Holders
111
Holders Change
+11
Holders Change %
+11%
% of All Funds
1.37%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
23
Increased
42
Reduced
25
Closed
11
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
HighTower Advisors
HighTower Advisors
Illinois
+$5.65M
2
FL
Fourthstone LLC
Missouri
+$3.67M
3
BlackRock
BlackRock
New York
+$2.93M
4
Bank of New York Mellon
Bank of New York Mellon
New York
+$2.44M
5
AG
AlTi Global
New York
+$2.42M

Top Sellers

Rank Fund Capital Flow
1
Acadian Asset Management
Acadian Asset Management
Massachusetts
-$4.48M
2
HIM
Hillsdale Investment Management
Ontario, Canada
-$2.59M
3
AllianceBernstein
AllianceBernstein
Tennessee
-$1.5M
4
Marshall Wace
Marshall Wace
United Kingdom
-$1.4M
5
Wellington Management Group
Wellington Management Group
Massachusetts
-$884K
Name Holding Trade Value Shares
Change 		Change in
Stake
BlackRock
1
BlackRock
New York
$30.1M +$2.93M +104,700 +10%
FL
2
Fourthstone LLC
Missouri
$22.6M +$3.67M +131,397 +19%
VCM
3
Vanguard Capital Management
Pennsylvania
$16M +$16.5M +588,427 New
Dimensional Fund Advisors
4
Dimensional Fund Advisors
Texas
$11.9M +$751K +26,842 +7%
AllianceBernstein
5
AllianceBernstein
Tennessee
$10.7M -$1.5M -53,500 -12%
BFC
6
Banc Funds Company
Illinois
$8.2M – – –
Geode Capital Management
7
Geode Capital Management
Massachusetts
$8.19M +$2.15M +76,766 +34%
RA
8
Royce & Associates
New York
$7.97M -$105K -3,748 -1%
Wellington Management Group
9
Wellington Management Group
Massachusetts
$6.84M -$884K -31,630 -11%
HighTower Advisors
10
HighTower Advisors
Illinois
$5.78M +$5.65M +201,917 +2,019%
State Street
11
State Street
Massachusetts
$4.85M +$1.18M +42,071 +31%
Arrowstreet Capital
12
Arrowstreet Capital
Massachusetts
$4.45M +$1.52M +54,447 +50%
MCM
13
Maltese Capital Management
New York
$4.28M -$423K -15,138 -9%
VPM
14
Vanguard Portfolio Management
Pennsylvania
$3.87M +$3.97M +141,922 New
KCM
15
Kennedy Capital Management
Missouri
$3.87M +$127K +4,550 +3%
BCM
16
Bridgeway Capital Management
Texas
$3.72M +$161K +5,746 +4%
Bank of New York Mellon
17
Bank of New York Mellon
New York
$3.36M +$2.44M +87,095 +241%
Northern Trust
18
Northern Trust
Illinois
$3.13M +$760K +27,187 +31%
Renaissance Technologies
19
Renaissance Technologies
New York
$2.87M +$1.57M +56,075 +114%
American Century Companies
20
American Century Companies
Missouri
$2.65M -$692K -24,738 -20%
Morgan Stanley
21
Morgan Stanley
New York
$2.5M +$893K +31,930 +53%
AG
22
AlTi Global
New York
$2.37M +$2.42M +86,568 New
VFT
23
Vanguard Fiduciary Trust
Pennsylvania
$2.12M +$2.17M +77,704 New
KAS
24
Kestra Advisory Services
Texas
$2.02M +$2.07M +73,956 New
GWM
25
Glass Wealth Management
Texas
$1.82M +$1.86M +66,586 New
1
2 3 4 5

ISTR Hedge Fund Activity: Q1 2026 in Review

111 of the 8,127 institutional investors tracked by Wall St. Rank reported a position in Investar Holding Corp (ISTR) for Q1 2026, worth a combined $209M — up 20% from $174M a quarter earlier.

Buyers outnumbered sellers: 23 funds opened new ISTR positions and 11 closed out — a net gain of 12 holders — while 42 added to existing stakes and 25 trimmed.

The largest buyer was HighTower Advisors, adding an estimated $5.65M. The largest seller was Acadian Asset Management, exiting entirely with an estimated $4.48M sold.

  • 111 institutional investors held Investar Holding Corp (ISTR) as of Q1 2026, up from 100 in Q4 2025.
  • Funds reported $209M of Investar Holding Corp stock for Q1 2026, up 20% quarter-over-quarter.
  • 23 funds opened new Investar Holding Corp positions in Q1 2026 and 11 closed out, a net change of +12 holders.
  • The largest Investar Holding Corp buyer in Q1 2026 was HighTower Advisors, an estimated $5.65M added.
  • The largest Investar Holding Corp seller in Q1 2026 was Acadian Asset Management, an estimated $4.48M sold.

Based on aggregated 13F filings for Q1 2026.