Ticker · CUSIP 596680108

MSEX

MIDDLESEX WTR CO

Utilities·Utilities - Regulated Water

···Share

Holders (tracked)

Combined shares

237,441

Combined value

$11.97M

Last close

$51.31

Quarter

2025Q4

Price is +1.8% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$51.31-9.74 (-15.96%)H $61.64 · L $48.27 · Avg Vol 139K

Tracked holders · last 8 quarters

-1 vs previous quarter over the last 8.

SEC event timeline

14 events

Ken Griffin (Citadel Advisors) added2026-02-17
+1,064 shares · 2025Q4
Position
AQR Capital Management trimmed2026-02-17
−25,390 shares · 2025Q4
Position
Two Sigma Investments trimmed2026-02-17
−21,493 shares · 2025Q4
Position
D.E. Shaw & Co. trimmed2026-02-17
−56,463 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) exited2026-02-17
−14,958 shares · 2025Q4
Position
T. Rowe Price added2026-02-17
+3,619 shares · 2025Q4
Position
Renaissance Technologies trimmed2026-02-12
−85,800 shares · 2025Q4
Position
AQR Capital Management added2025-11-14
+32,615 shares · 2025Q3
Position
Izzy Englander (Millennium Mgmt) trimmed2025-11-14
−2,252 shares · 2025Q3
Position
Steve Cohen (Point72) exited2025-11-14
−3,200 shares · 2025Q3
Position
Two Sigma Investments opened position2025-11-14
+25,593 shares · 2025Q3
Position
D.E. Shaw & Co. added2025-11-14
+3,423 shares · 2025Q3
Position
T. Rowe Price added2025-11-14
+1,746 shares · 2025Q3
Position
Renaissance Technologies added2025-11-13
+12,100 shares · 2025Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for MSEX →

Follow-the-investor returns

If you'd copied each holder of MSEX…

Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
Renaissance Technologies	2016Q1	$50.43	+1.7%	$6.6M
Ken Griffin (Citadel Advisors)	2017Q3	$53.31	-3.8%	$713K
Ken Griffin (Citadel Advisors)	2017Q3	$53.31	-3.8%	$713K
T. Rowe Price	2016Q2	$54.32	-5.5%	$1.4M
AQR Capital Management	2016Q2	$56.40	-9.0%	$1.2M
Two Sigma Investments	2016Q1	$56.49	-9.2%	$210K
D.E. Shaw & Co.	2018Q1	$61.26	-16.2%	$1.0M

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions0

—

Added to2

Ken Griffin (Citadel Advisors)
+1,064
$54K
T. Rowe Price
+3,619
$183

Trimmed4

Renaissance Technologies
−85,800
$4.3M
D.E. Shaw & Co.
−56,463
$2.8M
AQR Capital Management
−25,390
$1.3M
Two Sigma Investments
−21,493
$1.1M

Exited1

Izzy Englander (Millennium Mgmt)
−14,958
$810K

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	6	3,823,696	$402.1M	—
2022Q2	9	3,135,087	$274.9M	+3
2022Q3	8	2,997,676	$231.4M	-1
2022Q4	11	3,096,631	$243.6M	+3
2023Q1	11	3,108,305	$242.8M	—
2023Q2	8	3,468,894	$279.8M	-3
2023Q3	7	3,465,277	$229.6M	-1
2023Q4	8	3,549,028	$232.9M	+1
2024Q1	8	3,793,101	$199.1M	—
2024Q2	9	3,749,384	$195.9M	+1
2024Q3	6	246,355	$16.1M	-3
2024Q4	9	294,626	$15.5M	+3
2025Q1	8	364,494	$23.4M	-1
2025Q2	8	352,578	$19.1M	—
2025Q3	8	430,662	$23.3M	—
2025Q4	7	237,441	$12.0M	-1

Who owns MSEX

7 super-investors · 2025Q4

Tracked stake

237.4K

Combined value

$12M

% of shares outstanding

—

shares-out unknown

Quarter action mix

Added3Trim4

#	Manager	Shares	Value	% of book	Last action
1	Renaissance Technologies	129.2K	$7M	0.0%	Trim−85.8K
2	T. Rowe Price	27.9K	$1M	0.0%	Added+3.6K
3	AQR Capital Management	22.6K	$1M	0.0%	Trim−25.4K
4	D.E. Shaw & Co.	20.3K	$1M	0.0%	Trim−56.5K
5	Ken Griffin Citadel Advisors	19.5K	$983K	0.0%	Added+1.1K
6	Ken Griffin Citadel Advisors	13.9K	$700K	0.0%	Added+1.1K
7	Two Sigma Investments	4.1K	$207K	0.0%	Trim−21.5K

Recent moves

20 transactions

TRIMAQR Capital Management
−25,390 · 2025Q4
SOLDIzzy Englander (Millennium Mgmt)
−14,958 · 2025Q4
ADDT. Rowe Price
+3,619 · 2025Q4
ADDKen Griffin (Citadel Advisors)
+1,064 · 2025Q4
TRIMD.E. Shaw & Co.
−56,463 · 2025Q4
TRIMTwo Sigma Investments
−21,493 · 2025Q4
TRIMRenaissance Technologies
−85,800 · 2025Q4
ADDAQR Capital Management
+32,615 · 2025Q3
NEWTwo Sigma Investments
+25,593 · 2025Q3
SOLDSteve Cohen (Point72)
−3,200 · 2025Q3
ADDT. Rowe Price
+1,746 · 2025Q3
TRIMIzzy Englander (Millennium Mgmt)
−2,252 · 2025Q3
ADDD.E. Shaw & Co.
+3,423 · 2025Q3
ADDRenaissance Technologies
+12,100 · 2025Q3
ADDD.E. Shaw & Co.
+2,224 · 2025Q2
NEWSteve Cohen (Point72)
+3,200 · 2025Q2
TRIMIzzy Englander (Millennium Mgmt)
−37,166 · 2025Q2
ADDT. Rowe Price
+969 · 2025Q2
ADDAQR Capital Management
+10,711 · 2025Q2
ADDRenaissance Technologies
+22,500 · 2025Q2

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