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APMC

Alta Partners Management Company Portfolio holdings

AUM $127M
1-Year Est. Return 230.85%
This Fund
S&P 500
This Quarter Est. Return
+44.59%
1 Year Est. Return
+230.85%
3 Year Est. Return
–
5 Year Est. Return
–
10 Year Est. Return
–
AUM
$60M
AUM Growth
+$18.4M
Cap. Flow
$0
Cap. Flow %
0%
Top 10 Hldgs %
100%
Holding
2
New
–
Increased
–
Reduced
–
Closed
–

Top Buys

No buys this quarter

Top Sells

No sells this quarter

Sector Composition

Rank Sector Weight
1 Healthcare 100%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
TYRA icon
1
Tyra Biosciences
TYRA
$1.56B
$57.1M 95.15%
4,080,296
– –
VIR icon
2
Vir Biotechnology
VIR
$1.87B
$2.91M 4.85%
509,917
– –

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Alta Partners Management Company's Q3 2025 Portfolio in Review

As of Q3 2025, Alta Partners Management Company held 2 positions worth $60M, up 44% from $41.6M the previous quarter. Its ten largest holdings account for 100% of the portfolio.

Trading was light in Q3 2025: portfolio turnover was 0%. Alta Partners Management Company opened no new positions and made no exits, leaving the 2-position portfolio largely intact.

By sector, the portfolio is most concentrated in Healthcare at 100% of assets, unchanged from a quarter earlier.

  • Alta Partners Management Company's ten largest holdings make up 100% of its $60M portfolio in Q3 2025.
  • Alta Partners Management Company opened 0 new positions and closed 0 in Q3 2025.
  • Alta Partners Management Company's portfolio value rose 44% quarter-over-quarter to $60M.

Based on Alta Partners Management Company's 13F filing for Q3 2025, filed 7 Nov 2025.