HOLX β€” HOLOGIC INC COM

Ownership history in CASTLEARK MANAGEMENT LLC  Β·  20 quarters on record

This page tracks every 13F SEC filing in which CASTLEARK MANAGEMENT LLC reported a position in HOLOGIC INC COM (HOLX). 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.

πŸ” Peak position
2.92% (2006 Q4)
πŸ“Š Avg. % of fund
1.14%
πŸ“… First filed
2005 Q4
πŸ“… Last filed
2025 Q3
⏱ Quarters held
20

Position Intelligence

CASTLEARK MANAGEMENT LLC Γ— HOLX AI Analytics

Timing score: 56% (10/18 decisions correct). Average cost basis: $30.19. Maximum drawdown during holding period: –36.5%.

⏱️ Timing Score
56%

βœ… Decent timing β€” more right than wrong on entries and exits.
10 of 18 add/trim decisions correct

πŸ’° Entry Quality
$30.19
+123.6% vs current ($67.49)

Best entry: $21.76 (2006 Q3)  Β·  Worst: $42.55 (2017 Q1)

πŸ›‘οΈ Drawdown Resilience
–36.5%
max drawdown while held

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

πŸ’ͺ Fund Conviction
50%
buy-side decisions

10 adds Β· 10 trims. Bought during 4 of 7 down-price quarters. πŸ“ˆ More buys than sells across the holding period.

πŸ“‘ Position Trajectory
↓ Shrinking
last 4–5 quarters trend

πŸ“‰ Portfolio weight has been declining in recent quarters. Possible distribution phase.
Currently 0.02% 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)    HOLX price (monthly, adj. close)
πŸ“‹ Quarterly Holdings History 10 quarters  β–Ύ
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q3 REDUCED 8,790 -111,460 -92.7% 0.02% $593K $67.49
2017 Q2 REDUCED 120,250 -24,360 -16.8% 0.18% $5.5M $45.38
2017 Q1 ADDED 144,610 +31,510 +27.9% 0.19% $6.2M $42.55
2016 Q4 REDUCED 113,100 -228,380 -66.9% 0.14% $4.5M $40.12
2016 Q1 REDUCED 341,480 -121,840 -26.3% 0.37% $11.8M $34.50
2015 Q4 ADDED 463,320 +343,970 +288.2% 0.54% $17.9M $38.69
2015 Q3 REDUCED 119,350 -4,000 -3.2% 0.15% $4.7M $39.13
2015 Q2 REDUCED 123,350 -16,700 -11.9% 0.13% $4.7M $38.06
2015 Q1 ADDED 140,050 +86,178 +160.0% 0.11% $4.6M $33.03
2008 Q2 ADDED 53,872 +14,836 +38.0% 0.06% $1.2M $21.80
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🏒 Other funds also holding HOLX

As of 2025 Q4 β€” sorted by position size

Sand Grove Capital Management LLP 3Y 7Y 9.54% HBK INVESTMENTS L P 3Y 7Y 4.92% Absolute Gestao de Investimentos Ltda. 4.91% Athos Capital Ltd 3Y 7Y 4.85% HARVEST MANAGEMENT LLC 3Y 7Y 4.54% HARVEST MANAGEMENT LLC 3Y 7Y 4.54% NEXPOINT ASSET MANAGEMENT, L.P. 3Y 4.46% KRYGER CAPITAL Ltd 3Y 4.19% EQUITEC PROPRIETARY MARKETS, LLC 3Y 7Y 4.13% TIG Advisors, LLC 3Y 7Y 4.12%
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