Ownership history in Grantham, Mayo, Van Otterloo & Co. LLC Β· 20 quarters on record
This page tracks every 13F SEC filing in which Grantham, Mayo, Van Otterloo & Co. LLC reported a position in CLEAN ENERGY FUELS CORP (CLNE). 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.
π Grantham, Mayo, Van Otterloo & Co. LLC underperformed the S&P 500 by β35.8% annually on this CLNE position. Timing score: 47% (9/19 decisions correct). Average cost basis: $7.12. Maximum drawdown during holding period: β88.7%.
β Significantly underperformed the S&P 500 by 35.8% ann.
11 quarters analyzed
β‘οΈ Neutral timing β roughly coin-flip accuracy on add/trim calls.
9 of 19 add/trim decisions correct
Best entry: $2.58 (2025 Q3) Β· Worst: $13.74 (2021 Q1)
πͺ Held through 1 major drawdown (>20%). Strong conviction under pressure.
10 adds Β· 10 trims. Bought during 6 of 12 down-price quarters. π More buys than sells across the holding period.
βοΈ Portfolio weight has remained relatively stable β conviction maintained.
Currently 0.06% of portfolio
β 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.
As of 2025 Q4 β sorted by position size