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CenterBook Partners LP

Location
GREENWICH, CT
Portfolio Value
Mid $1,852,733,466
Diversification
Diversified
Filing Date
Global Rank
#1,255 / 8,603 ▼ 86 · as of Mar 2026
Top Industry
Semiconductors 7.0%
3Y Alpha vs SPY
+7.1%
Period ended 3 months ago
Filed May 5, 2026 · 2mo
18 quarters · since Dec 2021

Clone Performance

Jul 2023–Jul 2026 · vs SPY

Hypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.

Cloned portfolio
+109.0%
SPY
+76.0%
Annualised alpha
+7.1%
Max drawdown
−23.6%

Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.

Portfolio Concentration

622 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025
Top Position
2.1%
−3.6 pts
Top 5
9.5%
−3.9 pts
Top 10
16.2%
−3.6 pts
HHI
58
Jun 2023 → Mar 2026 · range 54 – 225
Diversified−29

Portfolio Trend

18 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026
Sector % Portfolio Value
Technology 26.7% $494,214,948
Healthcare 15.7% $290,833,610
Industrials 13.6% $251,221,420
Consumer Cyclical 10.1% $187,487,096
Financial Services 9.6% $177,785,218
Communication Services 9.0% $167,326,178
Energy 5.1% $93,662,791
Basic Materials 3.7% $68,428,530
Consumer Defensive 3.3% $61,457,668
Utilities 1.9% $34,511,490
Real Estate 1.3% $24,458,342
Unclassified 0.1% $1,346,175

Last Quarter's Activity

Export CSV
Mar 31, 2026 vs Dec 31, 2025

Added To

Positions the filer increased
25 positions
Ticker Δ Shares Shares Value Open

Trimmed

Positions the filer reduced
25 positions
Ticker Δ Shares Shares Value Open

New Positions

Positions the filer opened this quarter
25 positions
Ticker Shares Value Open

Sold Out

Positions the filer fully exited
25 positions
Ticker Shares Value Open

Portfolio Positions

Export CSV View 13F filing
622 positions · $1,852,733,466 total · as of Mar 31, 2026
Showing 1–50 of 622 positions by value · page 1 of 13
Ticker Company Shares Value (USD) % of Portfolio History