WLK β€” WESTLAKE CHEM CORP

Ownership history in Bayesian Capital Management, LP  Β·  8 quarters on record

This page tracks every 13F SEC filing in which Bayesian Capital Management, LP reported a position in WESTLAKE CHEM CORP (WLK). 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
0.28% (2017 Q4)
πŸ“Š Avg. % of fund
0.14%
πŸ“… First filed
2017 Q1
πŸ“… Last filed
2025 Q3
⏱ Quarters held
8

Position Intelligence

Bayesian Capital Management, LP Γ— WLK AI Analytics

πŸ“‰ Bayesian Capital Management, LP underperformed the S&P 500 by –53.8% annually on this WLK position. Timing score: 57% (4/7 decisions correct). Average cost basis: $80.96. Maximum drawdown during holding period: –22.0%.

πŸ“ˆ Position Alpha vs SPY
-53.8%
annualised excess return

❌ Significantly underperformed the S&P 500 by 53.8% ann.
7 quarters analyzed

⏱️ Timing Score
57%

βœ… Decent timing β€” more right than wrong on entries and exits.
4 of 7 add/trim decisions correct

πŸ’° Entry Quality
$80.96
-6.1% vs current ($76.01)

Best entry: $57.62 (2017 Q1)  Β·  Worst: $96.60 (2022 Q4)

πŸ›‘οΈ Drawdown Resilience
–22.0%
max drawdown while held

πŸ’ͺ Held through 1 major drawdown (>20%). Strong conviction under pressure.

πŸ’ͺ Fund Conviction
50%
buy-side decisions

4 adds Β· 4 trims. Bought during 1 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 0.15% 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)    WLK price (monthly, adj. close)
πŸ“‹ Quarterly Holdings History 8 quarters  β–Ύ
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q3 ADDED 9,241 +6,400 +225.3% 0.15% $712K $76.01
2025 Q1 REDUCED 2,841 -3,806 -57.3% 0.05% $284K $97.39
2022 Q4 ADDED 6,647 +2,900 +77.4% 0.10% $682K $96.60
2022 Q3 REDUCED 3,747 -7,200 -65.8% 0.07% $326K $81.57
2022 Q2 REDUCED 10,947 -2,072 -15.9% 0.20% $1.1M $91.73
2017 Q4 ADDED 13,019 +8,952 +220.1% 0.28% $1.4M $93.68
2017 Q2 REDUCED 4,067 -1,400 -25.6% 0.10% $269K $57.93
2017 Q1 INITIATED 5,467 β€” β€” 0.17% $361K $57.62

🏒 Other funds also holding WLK

As of 2025 Q4 β€” sorted by position size

ROBOTTI ROBERT 3Y 7Y 2.67% LUMINUS MANAGEMENT LLC 3Y 7Y 2.28% THOMIST CAPITAL MANAGEMENT, LP 3Y 1.78% Orbis Allan Gray Ltd 3Y 7Y 1.36% BRANDES INVESTMENT PARTNERS, LP 3Y 7Y 0.94% THOMPSON SIEGEL & WALMSLEY LLC 3Y 7Y 0.67% Merewether Investment Management, LP 3Y 0.66% ANTIPODES PARTNERS Ltd 3Y 7Y 0.65% Walnut Level Capital LLC 0.57% Ceredex Value Advisors LLC 3Y 7Y 0.52%
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