NSSC β€” NAPCO SEC TECHNOLOGIES INC

Ownership history in Walleye Trading LLC  Β·  18 quarters on record

This page tracks every 13F SEC filing in which Walleye Trading LLC reported a position in NAPCO SEC TECHNOLOGIES INC (NSSC). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price β€” sourced directly from SEC EDGAR 13F filings.

Position Intelligence

Walleye Trading LLC Γ— NSSC AI Analytics

πŸ“ˆ Walleye Trading LLC outperformed the S&P 500 by +71.8% annually on this NSSC position. Timing score: 53% (9/17 decisions correct). Average cost basis: $26.84. Maximum drawdown during holding period: –41.9%.

πŸ“ˆ Position Alpha vs SPY
+71.8%
annualised excess return

πŸ”₯ Exceptional β€” beat the S&P 500 by 71.8% per year on this position.
17 quarters analyzed

⏱️ Timing Score
53%

➑️ Neutral timing β€” roughly coin-flip accuracy on add/trim calls.
9 of 17 add/trim decisions correct

πŸ’° Entry Quality
$26.84
+54.8% vs current ($41.55)

Best entry: $2.84 (2015 Q4)  Β·  Worst: $50.58 (2024 Q2)

πŸ›‘οΈ Drawdown Resilience
–41.9%
max drawdown while held

πŸ’ͺ Held through 2 major drawdowns (>20%).

πŸ’ͺ Fund Conviction
61%
buy-side decisions

11 adds Β· 7 trims. Bought during 2 of 3 down-price quarters. πŸ“ˆ More buys than sells across the holding period.

πŸ“‘ Position Trajectory
β†’ Stable
last 4–5 quarters trend

βš–οΈ Portfolio weight has remained relatively stable β€” conviction maintained.
Currently 0.0% of portfolio

⚠ Based on quarterly 13F SEC filings and end-of-quarter closing prices. Timing score = accuracy of add/trim decisions vs next-quarter price direction. Alpha = mean quarterly excess return Γ— 4 (annualised). Not investment advice.

% of Fund (quarterly)    NSSC price (monthly, adj. close)
πŸ“‹ Quarterly Holdings History 10 quarters  β–Ύ
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q4 ADDED 4,607 +2,607 +130.4% 0.00% $192K $41.55
2025 Q4 REDUCED 2,000 -800 -28.6% 0.00% $83K $41.55
2025 Q3 REDUCED 2,800 -8,700 -75.7% 0.00% $120K $42.66
2025 Q3 ADDED 11,500 +9,114 +382.0% 0.00% $494K $42.66
2025 Q2 ADDED 2,386 +2,286 +2286.0% 0.00% $71K $29.39
2025 Q2 REDUCED 100 -11,400 -99.1% 0.00% $3K $29.39
2025 Q2 ADDED 11,500 +10,151 +752.5% 0.00% $341K $29.39
2024 Q2 REDUCED 1,349 -2,951 -68.6% 0.00% $70K $50.58
2024 Q2 ADDED 4,300 +2,800 +186.7% 0.00% $223K $50.58
2023 Q3 REDUCED 1,500 -6,100 -80.3% 0.00% $33K $21.51
8 older quarters hidden  β€”  Sign in free or upgrade to Premium to see full history

🏒 Other funds also holding NSSC

As of 2025 Q4 β€” sorted by position size

Doma Perpetual Capital Management LLC 7.36% Divisadero Street Capital Management, LP 3Y 1.58% Laurus Global Equity Management Inc. 3Y 1.44% Uniplan Investment Counsel, Inc. 3Y 7Y 1.35% Redmond Asset Management, LLC 3Y 7Y 1.33% Copeland Capital Management, LLC 3Y 7Y 1.32% RAFFLES ASSOCIATES LP 3Y 7Y 0.76% Bridge City Capital, LLC 3Y 7Y 0.73% Granite Investment Partners, LLC 3Y 7Y 0.69% ISTHMUS PARTNERS, LLC 3Y 7Y 0.56%
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