IV
Interwest Venture Management Co Historical SEC 13F Holdings & Archive (Q3 2023)
Interwest Venture Management CoCIK: 0001697720
Concentrated strategySector-focusedQuality / disciplined sizing
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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Personality snowflake
- Concentration
- 100
- Portfolio Stability
- 0
- Momentum
- 50
- Sector conviction
- 100
- Diversification
- 10
- Sizing Uniformity
- 90.65
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.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govNo holding changes this quarter
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list 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% | — | — |
* This report is exclusively curated by the AlphaSMO team. AlphaSMO is the web's most authoritative 13F / Inside Trader database, delivering precise insider trading and institutional holdings insights.
Portfolio Performance
Performance for Q3 2026
+13%
Performance Last 4 Quarters
+20.4%
- Stdev
- +80.2%
- Beta
- +2.04
- Alpha
- +3.6%
- Max Drawdown
- -60.2%
- Annualized Perf
- +15.1%
- Batting Avg vs S&P
- +52.8%
- Sortino
- +0.98
- Stutzer
- +0.16
- Treynor
- +0.22
- Sterling
- +0.26
- Calmar
- +0.25
- Information Ratio
- +0.32
- Tracking Error
- +77%
- Stdev Down
- +45.5%
- Winning Months %
- +55.6%
- Losing Months %
- +44.4%
- Best 12 Months
- +178.1%
- Worst 12 Months
- -45.4%
- Efficiency Ratio
- +0.08
- Sharpe
- +0.55
- Stdev Sectors
- 0%
- Skewness
- +0.49
- Kurtosis
- +0.87
- Upside Potential
- +2.89
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2023 Q3 | 5 | $20.6M | 0 | ||
| 2023 Q2 | 5 | $24.5M | 0 | ||
| 2023 Q1 | 5 | $20.8M | 0 | ||
| 2022 Q4 | 5 | $20.8M | 0 | ||
| 2022 Q3 | 8 | $32.4M | 0 | ||
| 2022 Q2 | 8 | $53.8M | 0 | ||
| 2022 Q1 | 9 | $261.8M | 0 | ||
| 2021 Q4 | 9 | $169.2M | 0 | ||
| 2021 Q3 | 10 | $241.5M | 0 | ||
| 2021 Q2 | 10 | $316.9M | 100 | ||
| 2021 Q1 | 12 | $380.2M | 72 | ||
| 2020 Q4 | 13 | $800.6M | 80 | ||
| 2020 Q3 | 12 | $346.5M | 100 | ||
| 2020 Q2 | 11 | $120.6M | 48 | ||
| 2020 Q1 | 12 | $94.7M | 84 | ||
| 2019 Q4 | 12 | $232.0M | 66 | ||
| 2019 Q3 | 12 | $260.6M | 25 | ||
| 2019 Q2 | 12 | $309.7M | 100 | ||
| 2019 Q1 | 11 | $108.9M | 62 | ||
| 2018 Q4 | 11 | $71.2M | 97 | ||
| 2018 Q3 | 11 | $204.8M | 38 | ||
| 2018 Q2 | 12 | $236.8M | 36 | ||
| 2018 Q1 | 11 | $237.4M | 34 | ||
| 2017 Q4 | 11 | $292.4M | 40 | ||
| 2017 Q3 | 10 | $384.0M | 14 | ||
| 2017 Q2 | 12 | $422.4M | 12 | ||
| 2017 Q1 | 12 | $470.4M | 18 | ||
| 2016 Q4 | 14 | $419.4M | 0 |
Holding changes this quarter
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|
Filing History
FAQ
What is Interwest Venture Management Co and what type of investor is it?
Interwest Venture Management Co is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2023-09-30), the firm manages a tracked equity portfolio valued at approximately $20.6M, spread across 5 disclosed positions.
What are Interwest Venture Management Co's largest equity positions?
Based on the latest 13F filing, Interwest Venture Management Co's top holdings by market value are:
1. Pmv Pharmaceuticals Inc (PMVP) — $9.9M (48.0%)
2. Realreal Inc/the (REAL) — $5.0M (24.1%)
3. Sera Prognostics Inc-a (SERA) — $4.5M (21.8%)
4. Glaukos CORP (GKOS) — $1.2M (6.0%)
5. Dare Bioscience Inc (CERUEUR) — $28.7K (0.1%)
What changes did Interwest Venture Management Co make in its most recent portfolio filing?
No notable portfolio changes were recorded for Interwest Venture Management Co in the most recent quarter. Holdings appear to have remained relatively stable.
What sectors does Interwest Venture Management Co focus on?
Interwest Venture Management Co is concentrated in the following sectors based on its current disclosed equity portfolio:
• Health Care: 100.0%
Investment Profile
Interwest Venture Management Co returned an annualized 15.1% over the trailing 36 months — outperforming the S&P 500 by 3.6 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 2.04 (more volatile than the market) and a 53% quarterly batting average against the index.
Its portfolio is concentrated and long-term-holding, with 100.0% of the portfolio concentrated in Health Care.
It has added to its GKOS position over the past two quarters (+$411.1K, now $1.2M), while trimming SERA over the same stretch (-$4.8M, still holding $4.5M).
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MF
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Developer Access
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