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WOODSTOCK CORP

Location
BOSTON, MA
Portfolio Value
Mid $1,045,155,323
Diversification
Diversified
Filing Date
Global Rank
#1,460 / 8,232 ▲ 97
Top Industry
Semiconductors 10.7%
3Y Alpha vs SPY
-5.5%
Period ended 2 months ago
Filed Apr 8, 2026 · 2mo
25 quarters · since Mar 2020

Clone Performance

Jun 2023–Jun 2026 · vs SPY

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

Cloned portfolio
+53.3%
SPY
+76.3%
Annualised alpha
-5.5%
Max drawdown
−18.1%

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

140 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025
Top Position
9.1%
−0.9 pts
Top 5
27.3%
−3.1 pts
Top 10
39.0%
−3.2 pts
HHI
260
Jun 2023 → Mar 2026 · range 225 – 313
Diversified−36

Portfolio Trend

25 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026
Sector % Portfolio Value
Technology 28.7% $299,927,575
Healthcare 18.5% $193,393,703
Industrials 9.5% $99,218,982
Consumer Cyclical 9.4% $97,879,591
Financial Services 8.0% $83,451,024
Consumer Defensive 7.7% $80,264,667
Energy 6.9% $72,570,073
Communication Services 4.7% $49,293,065
Basic Materials 2.6% $27,077,382
Utilities 1.9% $20,339,675
Unclassified 1.4% $14,684,828
Real Estate 0.7% $7,054,758

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
4 positions
Ticker Shares Value Open

Sold Out

Positions the filer fully exited
3 positions
Ticker Shares Value Open

Portfolio Positions

Export CSV View 13F filing
140 positions · $1,045,155,323 total · as of Mar 31, 2026
Showing 1–50 of 140 positions by value · page 1 of 3
Ticker Company Shares Value (USD) % of Portfolio History