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WESTFIELD CAPITAL MANAGEMENT CO LP FIX holdings history

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COMFORT SYSTEMS USA INC · CUSIP 199908104 · CIK 1177719

This is the oldest quarter open without an account, so changes against the quarter before it are withheld. Sign in to see them.
Citable facts

As of 2026-06-30, WESTFIELD CAPITAL MANAGEMENT CO LP reported 355.43K FIX (shares), valued at $704.45M, or 2.30% of its reported non-derivative portfolio. Filed 2026-08-12.

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Portfolio weight and quantity history
Reported portfolio weight
2.30%
Shares
355.43K
355,433
Reported value
$704.45M
USD

Shares decreased 42.76%; reported value decreased 17.73%, and weight changed -1.29 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.

Left: % · Right: Shares · Independently scaled axes

Exact data and methodology

Axes scale independently; a crossing does not mean equal values. Weight uses each quarter's total reported non-derivative value. Same CUSIP; missing quarters are gaps, not zero. Revised history may include later disclosures.

QuarterWeightQuantitySource
Q2 20262.30%355,433SEC filing ↗Filed Aug 12, 2026
Q1 20263.59%620,915SEC filing ↗Filed May 11, 2026
Q4 20252.60%668,835SEC filing ↗Filed Feb 11, 2026
Q3 20252.88%833,195SEC filing ↗Filed Nov 12, 2025
Q2 20252.11%936,412SEC filing ↗Filed Aug 12, 2025
Q1 20251.40%889,639SEC filing ↗Filed May 9, 2025
Q4 20241.63%885,127SEC filing ↗Filed Feb 11, 2025
Q3 20241.25%708,180SEC filing ↗Filed Nov 12, 2024
Q2 20241.29%864,869SEC filing ↗Filed Aug 14, 2024
Q1 20241.11%667,036SEC filing ↗Filed May 10, 2024
Q4 20230.51%426,570SEC filing ↗Filed Feb 9, 2024

History & evidence by quarter

QuarterWeightQuantityValueChange explainedSource
Q4 20230.51%426,570$87.73MThe prior quarter is outside the free window. Sign in for the comparison.SEC filing ↗
Filed Feb 9, 2024
Q1 20241.11%667,036$211.92MShares increased 56.37%; reported value increased 141.56%, and weight changed +0.60 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed May 10, 2024
Q2 20241.29%864,869$263.02MShares increased 29.66%; reported value increased 24.11%, and weight changed +0.18 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Aug 14, 2024
Q3 20241.25%708,180$276.44MShares decreased 18.12%; reported value increased 5.10%, and weight changed -0.04 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Nov 12, 2024
Q4 20241.63%885,127$375.35MShares increased 24.99%; reported value increased 35.78%, and weight changed +0.38 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Feb 11, 2025
Q1 20251.40%889,639$286.76MShares increased 0.51%; reported value decreased 23.60%, and weight changed -0.23 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed May 9, 2025
Q2 20252.11%936,412$502.11MShares increased 5.26%; reported value increased 75.10%, and weight changed +0.71 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Aug 12, 2025
Q3 20252.88%833,195$687.54MShares decreased 11.02%; reported value increased 36.93%, and weight changed +0.77 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Nov 12, 2025
Q4 20252.60%668,835$624.22MShares decreased 19.73%; reported value decreased 9.21%, and weight changed -0.28 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Feb 11, 2026
Q1 20263.59%620,915$856.24MShares decreased 7.16%; reported value increased 37.17%, and weight changed +0.99 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed May 11, 2026
Q2 20262.30%355,433$704.45MShares decreased 42.76%; reported value decreased 17.73%, and weight changed -1.29 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Aug 12, 2026
WESTFIELD CAPITAL MANAGEMENT CO LP · COMFORT SYSTEMS USA INC

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

13F reports quarter-end long positions in securities traded on US exchanges, filed by managers holding at least $100 million of such securities; it is not the manager's full portfolio, not assets under management, and value changes are not returns. Weights use the reported total value as denominator. Option rows show notional value, not premium or net exposure. Amendments are merged into the quarter when Akkru could match them.