Manager × security

Westmount Partners, LLC ILMN holdings history

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ILLUMINA INC · CUSIP 452327109 · CIK 2051491

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, Westmount Partners, LLC reported 22.73K ILMN (shares), valued at $4.00M, or 0.88% of its reported non-derivative portfolio. Filed 2026-07-07.

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Portfolio weight and quantity history
Reported portfolio weight
0.88%
Shares
22.73K
22,726
Reported value
$4.00M
USD

Shares decreased 35.29%; reported value decreased 7.69%, and weight changed -0.19 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 20260.88%22,726SEC filing ↗Filed Jul 7, 2026
Q1 20261.07%35,119SEC filing ↗Filed Apr 16, 2026
Q4 20251.31%40,103SEC filing ↗Filed Jan 15, 2026
Q3 20251.26%47,609SEC filing ↗Filed Oct 14, 2025
Q2 20251.25%47,609SEC filing ↗Filed Jul 9, 2025
Q1 20251.15%47,609SEC filing ↗Filed May 1, 2025
Q4 20241.93%47,609SEC filing ↗Filed Jan 13, 2025
Q3 20241.87%47,609SEC filing ↗Filed Jan 13, 2025
Q2 20241.66%47,609SEC filing ↗Filed Jan 28, 2025
Q1 20242.35%47,609SEC filing ↗Filed Jan 28, 2025
Q4 20232.71%47,614SEC filing ↗Filed Jan 28, 2025
Q3 20232.88%47,614SEC filing ↗Filed Jan 28, 2025

History & evidence by quarter

QuarterWeightQuantityValueChange explainedSource
Q3 20232.88%47,614$6.54MThe prior quarter is outside the free window. Sign in for the comparison.SEC filing ↗
Filed Jan 28, 2025
Q4 20232.71%47,614$6.63MShares unchanged; reported value increased 1.43%, and weight changed -0.17 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Jan 28, 2025
Q1 20242.35%47,609$6.54MShares decreased 0.01%; reported value decreased 1.39%, and weight changed -0.36 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Jan 28, 2025
Q2 20241.66%47,609$5.02MShares unchanged; reported value decreased 23.17%, and weight changed -0.69 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Jan 28, 2025
Q3 20241.87%47,609$6.21MShares unchanged; reported value increased 23.61%, and weight changed +0.21 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Jan 13, 2025
Q4 20241.93%47,609$6.36MShares unchanged; reported value increased 2.47%, and weight changed +0.06 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Jan 13, 2025
Q1 20251.15%47,609$3.78MShares unchanged; reported value decreased 40.63%, and weight changed -0.78 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed May 1, 2025
Q2 20251.25%47,609$4.54MShares unchanged; reported value increased 20.25%, and weight changed +0.10 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Jul 9, 2025
Q3 20251.26%47,609$4.87MShares unchanged; reported value increased 7.18%, and weight changed +0.01 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Oct 14, 2025
Q4 20251.31%40,103$5.26MShares decreased 15.77%; reported value increased 8.04%, and weight changed +0.05 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Jan 15, 2026
Q1 20261.07%35,119$4.33MShares decreased 12.43%; reported value decreased 17.70%, and weight changed -0.24 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Apr 16, 2026
Q2 20260.88%22,726$4.00MShares decreased 35.29%; reported value decreased 7.69%, and weight changed -0.19 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.SEC filing ↗
Filed Jul 7, 2026
Westmount Partners, LLC · ILLUMINA 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.