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Matrix Capital Management Company, LP

SEC CIK
0001410830
Latest filing
Aug 13, 2026

The latest 13F from Matrix Capital Management Company, LP covers Q2 2026 (filed Aug 13, 2026) and reports no long positions. Livermore has 22 filings on Form 13F from this institution, going back to Q1 2021.

What changed in Q2 2026

Share counts compared with Q1 2026: how many positions were new, added to, reduced or sold out, and the biggest buys and sells. Dollar amounts are estimated at the quarter-end prices implied by the filing.

Full comparison
New
0
Added
0
Reduced
0
Sold out
1
Est. −$46.3M

Top 5 holdings

Share of this quarter's portfolio value

This filing reports no long positions.

Biggest buys

New and added positions, by estimated amount bought

None this quarter.

Largest weight increases

New and added positions, by percentage points of the portfolio gained

None this quarter.

Biggest sells

Reduced and sold-out positions, by estimated amount sold

  1. AURAAura Biosciences, Inc.
    −$46.3MSold outHistory

Largest weight decreases

Reduced and sold-out positions, by percentage points of the portfolio lost

  1. AURAAura Biosciences, Inc.
    −100.00 pp100.0% → 0.0%History

Metrics

13F metrics for Q2 2026, computed only from the numbers in the filings. Definitions below.

Portfolio value
$0
−$46.3M (−100.0%) vs. prior quarter
Positions
0
−1 vs. prior quarter
Top 10 concentration
–
Top 10 as share of value
Turnover
0.0%
Q2 2026, one quarter
Average holding period
–
Weighted by value

How these are calculated

  • Portfolio value: the market value of all long positions in the 13F, as reported at quarter end, excluding options.
  • Top 10 concentration: the combined value of the 10 largest positions as a share of portfolio value.
  • Turnover: the smaller of this quarter's estimated purchases and estimated sales, divided by the average of this and last quarter's portfolio value. Estimates multiply the change in shares by the quarter-end price implied by the filing (market value divided by shares); new positions use this quarter's value and sold-out positions last quarter's. Only positions reported in shares count, and it is not calculated when the previous quarter was not filed.
  • Average holding period: how many consecutive quarters each current position has been held (including this one; a quarter without the position or without a filing starts the count over), weighted by this quarter's value. Counting starts with the first 13F in Livermore (Q1 2021), so positions held before then are understated.

13F filings by quarter

22 quarters, going back to Q1 2021. Bars show each quarter's 13F portfolio value; quarters without a filing are left blank.

Peak $13.1B (Q2 2024)

Q1 2021: $8.66BQ2 2021: $9.15BQ3 2021: $8.79BQ4 2021: $8.98BQ1 2022: $8.33BQ2 2022: $4.41BQ3 2022: $5.23BQ4 2022: $5.24BQ1 2023: $7.36BQ2 2023: $8.61BQ3 2023: $8.34BQ4 2023: $9.72BQ1 2024: $10.8BQ2 2024: $13.1BQ3 2024: $2.09BQ4 2024: $2.15BQ1 2025: $347.2MQ2 2025: $222.8MQ3 2025: $106.7MQ4 2025: $57.6MQ1 2026: $46.3M
Q1 2021Q2 2026
13F filings of Matrix Capital Management Company, LP by quarter
QuarterFiledPositionsValueTop 3 holdingsChangesFiling
Q2 2026Aug 13, 20260$0–vs. Q1 2026SEC
Q1 2026May 14, 20261$46.3MAURAvs. Q4 2025SEC
Q4 2025Feb 13, 20262$57.6MAURAMAZEvs. Q3 2025SEC
Q3 2025Nov 13, 20253$106.7MMAZEAURAZNTLvs. Q2 2025SEC
Q2 2025Aug 14, 20254$222.8MGFSAURAMAZEvs. Q1 2025SEC
Q1 2025May 14, 20254$347.2MGFSAURAMAZEvs. Q4 2024SEC
Q4 2024Feb 13, 20255$2.15BALTRGFSPRMvs. Q3 2024SEC
Q3 2024Nov 14, 20247$2.09BALTRGFSPRMvs. Q2 2024SEC
Q2 2024Aug 14, 202423$13.1BNVDAQCOMTDGvs. Q1 2024SEC
Q1 2024May 14, 202423$10.8BNVDATDGQCOMvs. Q4 2023SEC
Q4 2023Feb 13, 202419$9.72BNVDAAMATAMZNvs. Q3 2023SEC
Q3 2023Nov 14, 202319$8.34BNVDAGFSAMATvs. Q2 2023SEC
Q2 2023Aug 14, 202319$8.61BNVDAGFSAMATvs. Q1 2023SEC
Q1 2023May 15, 202317$7.36BNVDAGFSTDGvs. Q4 2022SEC
Q4 2022Feb 13, 202317$5.24BGFSNVDATDGvs. Q3 2022SEC
Q3 2022Nov 14, 202226$5.23BGFSTDGCRWDvs. Q2 2022SEC
Q2 2022Aug 15, 202220$4.41BTDGGFSCRWDvs. Q1 2022SEC
Q1 2022May 16, 202225$8.33BDISNFLXTDGvs. Q4 2021SEC
Q4 2021Feb 15, 202222$8.98BNFLXTDGCRMvs. Q3 2021SEC
Q3 2021Nov 15, 202123$8.79BNFLXCRWDCRMvs. Q2 2021SEC
Q2 2021Aug 16, 202123$9.15BNFLXCRWDDISvs. Q1 2021SEC
Q1 2021May 17, 202130$8.66BNFLXDISTDG–SEC

13D and 13G filings

Companies where Matrix Capital Management Company, LP reports owning 5% or more on Schedule 13D or 13G, and its latest filings.

Current stakes of 5% or more

Matrix Capital Management Company, LP does not currently report owning 5% or more of any company.

Latest filings

39 filings on file made by Matrix Capital Management Company, LP or listing it as a reporting person; the latest 20 are shown.

Schedule 13D and 13G filings by Matrix Capital Management Company, LP
CompanyFiled (ET)FormStakeChangeEvent dateFiling
AURAAura Biosciences, Inc.May 11, 20264:15 PM ET13D/A0.00%0 shares−11.17 ppfrom 11.17%Below 5%May 7, 2026SEC
ZNTLZentalis Pharmaceuticals, Inc.Jan 2, 20264:10 PM ET13D/A0.00%0 shares−9.98 ppfrom 9.98%Below 5%Dec 30, 2025SEC
ZNTLZentalis Pharmaceuticals, Inc.Dec 15, 20255:16 PM ET13D/A9.98%6.46M shares–Dec 15, 2025SEC
MAZEMaze Therapeutics, Inc.Nov 13, 20254:10 PM ET13G/A3.50%1.65M shares−2.20 ppfrom 5.70%Below 5%Sep 30, 2025SEC
AURAAura Biosciences, Inc.May 19, 20254:35 PM ET13D/A11.17%6.92M shares–May 16, 2025SEC
MAZEMaze Therapeutics, Inc.May 14, 20254:10 PM ET13G5.70%2.49M sharesNewMar 31, 2025SEC
ALTRAltair Engineering Inc.Apr 7, 20254:15 PM ET13G/A0.00%0 shares–Below 5%Mar 31, 2025SEC
PRMPerimeter Solutions, Inc.Feb 12, 20255:00 PM ET13G/A4.48%6.55M shares–Below 5%Dec 31, 2024SEC
ADAPYAdaptimmune Therapeutics PLCJan 8, 202510:30 AM ET13G/A0.00%0 shares−8.80 ppfrom 8.80%Below 5%Dec 31, 2024SEC
ADAPYAdaptimmune Therapeutics PLCDec 5, 20245:17 PM ET13G/A8.80%135.0M shares–Nov 30, 2024SEC
ALTRAltair Engineering Inc.Nov 13, 202413G/AOld format–––SEC
ADAPYAdaptimmune Therapeutics PLCNov 13, 202413G/AOld format–––SEC
ADPTAdaptive Biotechnologies CorpNov 13, 202413G/AOld format–––SEC
ALTRAltair Engineering Inc.Feb 13, 202413G/AOld format–––SEC
AURAAura Biosciences, Inc.Nov 9, 202313D/AOld format–––SEC
ADAPYAdaptimmune Therapeutics PLCJul 10, 202313G/AOld format–––SEC
ZNTLZentalis Pharmaceuticals, Inc.Jun 20, 202313D/AOld format–––SEC
NEWRNew Relic, Inc.Feb 13, 202313G/AOld format–––SEC
FORGForgeRock, Inc.Feb 13, 202313G/AOld format–––SEC
ALTRAltair Engineering Inc.Feb 13, 202313G/AOld format–––SEC