CenterBook Partners’s Napco Security Technologies NSSC Stock Holding History

CenterBook Partners’s Portfolio NSSC Stock Details NSSC Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$666K	Sell	17,532 -114,935	-87%	-$4.57M	0.03%	456
2026 Q1	$5.22M	Sell	132,467 -883	-0.7%	-$37K	0.28%	101
2025 Q4	$5.56M	Buy	133,350 +3,285	+3%	+$138K	0.27%	92
2025 Q3	$5.59M	Sell	130,065 -142,827	-52%	-$4.95M	0.28%	91
2025 Q2	$8.1M	Sell	272,892 -83,263	-23%	-$2.14M	0.45%	47
2025 Q1	$8.2M	Buy	+356,155	New	+$10.1M	0.52%	46
2023 Q2	–	Sell	-55,013	Closed	-$2.07M	–	461
2023 Q1	$2.07M	Buy	+55,013	New	+$1.75M	0.29%	115

Other funds holding NSSC

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

CCM

Copeland Capital Management Conshohocken, Pennsylvania $4.87B AUM 31.21% 1-Year Est. Return

Jupiter Topco New York $245B AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

CenterBook Partners's NSSC Position: Q2 2026 in Review

CenterBook Partners reduced its Napco Security Technologies (NSSC) stake by 87% in Q2 2026, selling an estimated $4.57M and leaving 17,532 shares worth $666K. The position accounts for 0.03% of the portfolio, ranked #456.

CenterBook Partners first reported a position in NSSC in Q1 2023 and has held it in 7 quarters since. The position peaked at $8.2M in Q1 2025. 259 funds tracked by Wall St. Rank hold NSSC as of Q2 2026.

CenterBook Partners held 17,532 shares of Napco Security Technologies worth $666K as of Q2 2026.
CenterBook Partners sold 114,935 Napco Security Technologies shares in Q2 2026, an estimated $4.57M.
Napco Security Technologies made up 0.03% of CenterBook Partners's portfolio in Q2 2026, its #456 holding.
CenterBook Partners first reported a position in Napco Security Technologies in Q1 2023 and has held it in 7 quarters since.
CenterBook Partners's Napco Security Technologies position peaked at $8.2M in Q1 2025.
259 funds tracked by Wall St. Rank held Napco Security Technologies as of Q2 2026.

Based on CenterBook Partners's 13F filing for Q2 2026, filed 11 Aug 2026.