CIK: 0001697720
Total reported value
$20.6M
Reporting period: 2023-09-30 · Number of holdings: 5
INTERWEST VENTURE MANAGEMENT CO disclosed 5 holdings in its latest 13F filing for the period ending 2023-09-30, with total reported value of $20.6M and a quarterly turnover rate of 0.0%.
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Interwest Venture Management Co's disclosed holdings carry a Herfindahl concentration index of 0.340 — mathematically equivalent to about 3 equally-sized positions, close to its 5 actual disclosed holdings. Value is spread relatively evenly across the portfolio rather than concentrated in a handful of names.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 0.93), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Sector classification currently covers about 6% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
No holding changes this quarter
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | PMVP | Pmv Pharmaceuticals INC | Stock-Other | 48.05% | — | — | |
| 2 | REAL | Realreal Inc/the | Stock-Other | 24.07% | — | — | |
| 3 | SERA | Sera Prognostics Inc-a | Stock-Other | 21.78% | — | — | |
| 4 | GKOS | Glaukos CORP | Stock-Healthcare | 5.96% | — | — | |
| 5 | CERUEUR | Dare Bioscience INC | Stock-Other | 0.14% | — | — |
Performance for Q3 2026
-3.2%
Performance Last 4 Quarters
+65.3%
Based on 52% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2023-09-30 | 5 | $20.6M | 0 | |
| 2023-06-30 | 5 | $24.5M | 0 | |
| 2023-03-31 | 5 | $20.8M | 0 | |
| 2022-12-31 | 5 | $20.8M | 0 | |
| 2022-09-30 | 8 | $32.4M | 0 | |
| 2022-06-30 | 8 | $53.8M | 0 | |
| 2022-03-31 | 9 | $261.8M | 0 | |
| 2021-12-31 | 9 | $169.2M | 0 | |
| 2021-09-30 | 10 | $241.5M | 0 | |
| 2021-06-30 | 10 | $316.9M | 100 | |
| 2021-03-31 | 12 | $380.2M | 72 | |
| 2020-12-31 | 13 | $800.6M | 80 | |
| 2020-09-30 | 12 | $346.5M | 100 | |
| 2020-06-30 | 11 | $120.6M | 48 | |
| 2020-03-31 | 12 | $94.7M | 84 | |
| 2019-12-31 | 12 | $232.0M | 66 | |
| 2019-09-30 | 12 | $260.6M | 25 | |
| 2019-06-30 | 12 | $309.7M | 100 | |
| 2019-03-31 | 11 | $108.9M | 62 | |
| 2018-12-31 | 11 | $71.2M | 97 | |
| 2018-09-30 | 11 | $204.8M | 38 | |
| 2018-06-30 | 12 | $236.8M | 36 | |
| 2018-03-31 | 11 | $237.4M | 34 | |
| 2017-12-31 | 11 | $292.4M | 40 | |
| 2017-09-30 | 10 | $384.0M | 14 | |
| 2017-06-30 | 12 | $422.4M | 12 | |
| 2017-03-31 | 12 | $470.4M | 18 | |
| 2016-12-31 | 14 | $419.4M | 0 |
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2023-09-30 | 2023-10-20 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-07-21 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-04-27 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-01-31 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-10-25 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-02 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-04-13 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-01-25 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-10-19 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-07-26 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-04-15 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-01-27 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-10-15 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-07-23 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-04-13 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-01-23 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-10-15 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-07-29 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-04-15 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-01-04 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-10-04 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-07-05 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-04-05 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-01-10 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-10-11 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-07-11 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-04-14 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-02-10 | 13F-HR | View on EDGAR |
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