Arkolith/Funds/Alta Partners Management Company, L.P.

Alta Partners Management Company, L.P.

CIK 2054419
Holdings as of Jun 30, 2026·disclosed Jul 22, 2026·~22-day 13F lag·13F-HR
Active Filer

Alta Partners Management Company, L.P. holds a concentrated book of 2 stocks worth $127.3M as of Q2 2026 (disclosed Jul 22, 2026, a ~45-day 13F lag). This quarter they opened Allakos Inc. Their largest long position is Tyra Biosciences Inc at 96% of the equity book.

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Use Arkolith to show Alta Partners Management Company, L.P.'s latest
holdings, largest changes, and filing provenance.
Opened
1
new positions
Added to
0
existing
Trimmed
0
reduced
Sold out
0
exited

Concentration

Top-heavy: concentrated book

Top 5 holdings
100%
Top 10 holdings
100%
Top 20 holdings
100%

Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.

Direct sector allocation

100% mapped to company sectors

Health Care
100%

Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.

Funds with the most overlap

Other tracked managers holding the same core names as Alta Partners Management Company, L.P.

Manager / fundShared namesTheir $ in those
FMR LLC2 / 2$315.3M
BlackRock, Inc.2 / 2$246.2M
JANUS HENDERSON GROUP PLC2 / 2$149.4M
FARALLON CAPITAL MANAGEMENT LLC2 / 2$137.3M
VANGUARD GROUP INC2 / 2$117.0M
STATE STREET CORP2 / 2$110.6M
VANGUARD PORTFOLIO MANAGEMENT LLC2 / 2$92.0M
VANGUARD CAPITAL MANAGEMENT LLC2 / 2$91.3M

Ranked by how many of Alta Partners Management Company, L.P.'s top 2 disclosed names each fund also holds: a cross-fund conviction signal from the latest 13F of every tracked manager.

Holdings: largest first

Bars show each stock's share of the portfolio. Click a row for its position history.

2 positions
#SecurityValueShares% PortLast moveHistory
1
COM
$122.1M3.82M
95.9%
—Held
2
COM
$5.2M509.9K
4.1%
—Held
Showing all 2 positions

Filing history

As-of date vs the date the SEC received each filing

QuarterAs ofFiledPositionsValueForm
Q2 2026Jun 30, 2026Jul 22, 20262$127.3M13F-HR
Q1 2026Mar 31, 2026Apr 21, 20262$151.0M13F-HR
Q4 2025Dec 31, 2025Jan 13, 20262$103.6M13F-HR
Q3 2025Sep 30, 2025Nov 7, 20252$60.0M13F-HR
Q2 2025Jun 30, 2025Aug 14, 20252$41.6M13F-HR
Q1 2025Mar 31, 2025May 12, 20253$41.8M13F-HR
Q4 2024Dec 31, 2024Feb 5, 20253$63.4M13F-HR

Data source

Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. Price-derived performance is withheld until the price-source policy and freshness gate are green.