PI
Platt Investment Counsel, LLC 13F Disclosure (Q3 2026) — Portfolio & Holdings
Platt Investment Counsel, LLCCIK: 0001859195
Momentum followerQuality / disciplined sizingSector-focused
Total reported value
$145.3M
Reporting period: 2026-09-30 · Number of holdings: 15
Platt Investment Counsel, LLC disclosed 15 holdings in its latest 13F filing for the period ending 2026-09-30, with total reported value of $145.3M and a quarterly turnover rate of 13.8%.
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Personality snowflake
- Concentration
- 64.96
- Portfolio Stability
- 13.77
- Momentum
- 100
- Sector conviction
- 77.89
- Diversification
- 30
- Sizing Uniformity
- 87.6
Platt Investment Counsel, LLC's disclosed holdings carry a Herfindahl concentration index of 0.162 — mathematically equivalent to about 6 equally-sized positions, well below its 15 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 1.24), with a handful of outsized bets alongside many smaller positions.
Recent activity leans toward adding more aggressively to already-large existing positions than to newly initiated ones (a 6.4 percentage-point tilt) — a pattern consistent with a momentum-following approach.
Sector classification currently covers about 1% 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.govAdd VEU
+59.3% $4.4M
Trim QQQ
-18.3% -$4.8M
Add VCSH
+20.2% $2.0M
Add IWM
+25.6% $1.6M
Trim ESGV
-8.8% -$3.0M
Trim IJH
-1.0% -$1.7M
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 | ESGV | Vanguard Esg US Stock ETF | ETF-Other | 29.66% | -1.25% | -8.85% | |
| 2 | QQQ | Invesco Qqq Trust Series 1 | ETF-Tech | 15.24% | -2.83% | -18.25% | |
| 3 | IJH | Ishares Core S&p Midcap ETF | ETF-Other | 14.03% | -0.75% | -0.96% | |
| 4 | VCSH | Vanguard S/t CORP Bond ETF | ETF-Corp Bonds | 9.25% | +1.59% | +20.23% | |
| 5 | VEU | Vanguard Ftse All-world Ex-u | ETF-Other | 8.31% | +3.18% | +59.33% | |
| 6 | IWM | Ishares Russell 2000 ETF | ETF-Small Cap | 7.84% | +1.27% | +25.64% | |
| 7 | BND | Vanguard Total Bond Market | ETF-Other | 7.15% | -0.55% | -5.40% | |
| 8 | BLV | Vanguard Long-term Bond ETF | ETF-Other | 6.89% | -0.73% | -3.23% | |
| 9 | BMY | Bristol-myers Squibb Co | Stock-Healthcare | 0.37% | +0.04% | — | |
| 10 | TSLA | Tesla Inc | Stock-Consumer Disc | 0.32% | -0.06% | -2.22% | |
| 11 | AAPL | Apple Inc | Stock-Tech | 0.25% | +0.03% | — | |
| 12 | VOO | Vanguard S&p 500 ETF | ETF-Large Cap & Growth | 0.22% | +0.01% | — | |
| 13 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 0.22% | — | — | |
| 14 | ILCG | Ishares Morningstar Growth E | ETF-Other | 0.20% | -0.01% | -4.97% | |
| 15 | IVA | Inventiva SA - Adr | Stock-Other | 0.03% | +0.03% | NEW |
Portfolio Performance
Performance for Q4 2026
+2.2%
Performance Last 4 Quarters
+10.5%
- Stdev
- +13.3%
- Beta
- +1.05
- Alpha
- -4.1%
- Max Drawdown
- -10.8%
- Annualized Perf
- +20.9%
- Batting Avg vs S&P
- +33.3%
- Sortino
- +3.21
- Stutzer
- +0.44
- Treynor
- +0.19
- Sterling
- +1.25
- Calmar
- +1.93
- Information Ratio
- -0.82
- Tracking Error
- +3.6%
- Stdev Down
- +6.2%
- Winning Months %
- +63.9%
- Losing Months %
- +36.1%
- Best 12 Months
- +35.9%
- Worst 12 Months
- +3.7%
- Efficiency Ratio
- +0.66
- Sharpe
- +1.51
- Stdev Sectors
- +4.9%
- Skewness
- +0.09
- Kurtosis
- -0.27
- Upside Potential
- +4.74
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q3 | 15 | $145.3M | 14 | ||
| 2026 Q2 | 14 | $149.3M | 0 | ||
| 2026 Q1 | 13 | $129.9M | 22 | ||
| 2025 Q4 | 12 | $135.3M | 17 | ||
| 2025 Q3 | 12 | $127.0M | 42 | ||
| 2025 Q2 | 9 | $105.2M | 0 | ||
| 2025 Q1 | 10 | $101.3M | 100 | ||
| 2024 Q4 | 10 | $104.8M | 0 | ||
| 2024 Q3 | 10 | $112.7M | 0 | ||
| 2024 Q2 | 10 | $104.0M | 0 | ||
| 2024 Q1 | 10 | $104.9M | 0 | ||
| 2023 Q4 | 10 | $96.5M | 0 | ||
| 2023 Q3 | 9 | $83.8M | 0 | ||
| 2023 Q2 | 9 | $88.1M | 0 | ||
| 2023 Q1 | 9 | $74.8M | 0 | ||
| 2022 Q4 | 9 | $70.3M | 0 | ||
| 2022 Q3 | 13 | $68.9M | 0 | ||
| 2022 Q2 | 12 | $73.6M | 0 | ||
| 2022 Q1 | 14 | $107.5M | 0 | ||
| 2021 Q4 | 15 | $117.2M | 0 | ||
| 2021 Q3 | 16 | $112.7M | 0 | ||
| 2021 Q2 | 16 | $116.3M | 100 | ||
| 2021 Q1 | 15 | $111.8M | 25 | ||
| 2020 Q4 | 14 | $105.6M | — |
Holding changes this quarter
Platt Investment Counsel, LLC's most significant position changes for 2026-09-30: New buy: Inventiva SA - Adr (IVA); Add: Vanguard Ftse All-world Ex-u (VEU) — shares +59.33%; Trim: Invesco Qqq Trust Series 1 (QQQ) — shares -18.25%; Add: Vanguard S/t CORP Bond ETF (VCSH) — shares +20.23%; Add: Ishares Russell 2000 ETF (IWM) — shares +25.64%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | VEU | Vanguard Ftse All-world Ex-u | +3.2% | +59.33% | Add |
| 2 | VCSH | Vanguard S/t CORP Bond ETF | +1.6% | +20.23% | Add |
| 3 | IWM | Ishares Russell 2000 ETF | +1.3% | +25.64% | Add |
| 4 | BMY | Bristol-myers Squibb Co | 0% | — | Unchanged |
| 5 | AAPL | Apple Inc | 0% | — | Unchanged |
| 6 | IVA | Inventiva SA - Adr | 0% | NEW | New buy |
| 7 | VOO | Vanguard S&p 500 ETF | 0% | — | Unchanged |
| 8 | GOOGL | Alphabet Inc-cl A | — | — | Unchanged |
| 9 | ILCG | Ishares Morningstar Growth E | 0% | -4.97% | Trim |
| 10 | TSLA | Tesla Inc | -0.1% | -2.22% | Trim |
| 11 | BND | Vanguard Total Bond Market | -0.6% | -5.40% | Trim |
| 12 | BLV | Vanguard Long-term Bond ETF | -0.7% | -3.23% | Trim |
| 13 | IJH | Ishares Core S&p Midcap ETF | -0.8% | -0.96% | Trim |
| 14 | ESGV | Vanguard Esg US Stock ETF | -1.3% | -8.85% | Trim |
| 15 | QQQ | Invesco Qqq Trust Series 1 | -2.8% | -18.25% | Trim |
Filing History
FAQ
What is Platt Investment Counsel, LLC and what type of investor is it?
Platt Investment Counsel, LLC 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 (2026-09-30), the firm manages a tracked equity portfolio valued at approximately $145.3M, spread across 15 disclosed positions.
What are Platt Investment Counsel, LLC's largest equity positions?
Based on the latest 13F filing, Platt Investment Counsel, LLC's top holdings by market value are:
1. Vanguard Esg US Stock ETF (ESGV) — $43.1M (29.7%)
2. Invesco Qqq Trust Series 1 (QQQ) — $22.1M (15.2%)
3. Ishares Core S&p Midcap ETF (IJH) — $20.4M (14.0%)
4. Vanguard S/t CORP Bond ETF (VCSH) — $13.4M (9.3%)
5. Vanguard Ftse All-world Ex-u (VEU) — $12.1M (8.3%)
What changes did Platt Investment Counsel, LLC make in its most recent portfolio filing?
In the latest reported quarter, Platt Investment Counsel, LLC made 11 notable position adjustments: 1 new positions were initiated, 3 existing holdings were added to, 7 positions were partially reduced, and 0 were completely exited. The largest of these moves: New buy: Inventiva SA - Adr (IVA); Add: Vanguard Ftse All-world Ex-u (VEU) — shares +59.33%; Trim: Invesco Qqq Trust Series 1 (QQQ) — shares -18.25%; Add: Vanguard S/t CORP Bond ETF (VCSH) — shares +20.23%; Add: Ishares Russell 2000 ETF (IWM) — shares +25.64%
What sectors does Platt Investment Counsel, LLC focus on?
Platt Investment Counsel, LLC is concentrated in the following sectors based on its current disclosed equity portfolio:
• Health Care: 31.5%
• Consumer Discretionary: 27.7%
• Information Technology: 21.9%
• Communication Services: 18.9%
Investment Profile
Platt Investment Counsel, LLC returned an annualized 20.9% over the trailing 36 months — underperforming the S&P 500 by 4.1 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 1.05 (roughly in line with the market) and a 33% quarterly batting average against the index.
Its portfolio is moderately concentrated and long-term-holding, with 31.5% of the portfolio concentrated in Health Care.
Its turnover score has fallen from 42 to 14 over the past 4 quarters — a shift toward longer holding periods.
It has added to its VEU position for two straight quarters, increasing it by $5.3M to reach $12.1M.
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