SEC Filing Analysis: Platt Investment Counsel, LLC

Executive Summary

• Trading Significance: Medium
• Key Takeaway: Platt Investment Counsel, LLC filed a 13F-HR report disclosing $126.96 million in assets under management as of September 30, 2025. The portfolio is heavily concentrated in broad-market and ESG-focused ETFs, indicating a strategy centered on diversification and thematic investing.
• Market Impact: The filing provides a transparent look into the strategy of a registered investment advisor. While the total AUM is not large enough to move markets, the composition reveals a preference for passive, diversified instruments over individual stock picking, with a significant bet on ESG.

Filer Information

Field	Value
Company	Platt Investment Counsel, LLC
CIK	0001859195
Form Type	13F-HR
Filing Date	2025-10-14
Period of Report	2025-09-30
Total Portfolio Value	$126,957,915

Holdings Summary

This report details the firm's long positions as of the end of the third quarter of 2025. No individual transactions are detailed.

Issuer	Title of Class	CUSIP	Value ($)	Shares
VANGUARD WORLD FD	ESG US STK ETF	921910733	47,518,539	401,203
INVESCO QQQ TR	UNIT SER 1	46090E103	25,910,818	43,158
ISHARES TR	CORE S&P MCP ETF	464287507	17,881,576	274,005
VANGUARD SCOTTSDALE FDS	SHRT TRM CORP BD	92206C409	10,893,260	136,285
VANGUARD BD INDEX FDS	TOTAL BND MRKT	921937835	9,248,207	124,354
VANGUARD BD INDEX FDS	LONG TERM BOND	921937793	6,973,836	98,431
SCHWAB STRATEGIC TR	US TIPS ETF	808524870	6,693,194	248,356
TESLA INC	COM	88160R101	667,080	1,500
APPLE INC	COM	037833100	344,514	1,353
ISHARES TR	MORNINGSTAR GRWT	464287119	312,900	3,000
VANGUARD INDEX FDS	S&P 500 ETF SHS	922908363	283,532	463
ALPHABET INC	CAP STK CL A	02079K305	230,459	948

Portfolio Analysis

Strategy & Concentration

• ETF Dominance: Over 99% of the reported assets are held in Exchange-Traded Funds (ETFs), with the top 3 holdings (all ETFs) accounting for approximately 72% of the total portfolio value.
• ESG Focus: The single largest position is the Vanguard ESG US Stock ETF, valued at $47.5 million, making up 37.4% of the portfolio. This indicates a strong commitment to an Environmental, Social, and Governance investment theme.
• Minimal Single-Stock Exposure: Direct holdings in individual companies like Tesla, Apple, and Alphabet are nominal, collectively representing less than 1% of the total AUM. This suggests they are likely not core strategic positions but perhaps legacy holdings or tactical satellites.

Asset Allocation Insights

• Equity vs. Fixed Income: The portfolio shows a clear allocation to both equities (via QQQ, S&P Mid-Cap, ESG ETFs) and fixed income (via Total Bond, Long-Term Bond, Short-Term Corp Bond, and TIPS ETFs). This reflects a balanced approach to asset management.
• Market Cap Exposure: The holdings provide exposure across the market cap spectrum, from the Nasdaq-100 (QQQ) to S&P Mid-Cap (IJH) and the broad market (Vanguard ESG).

Key Takeaways

1. Passive Strategy: Platt Investment Counsel employs a strategy that heavily favors passive, diversified ETFs over active stock selection.
2. Significant ESG Mandate: The firm has made a substantial allocation to an ESG-focused fund, highlighting its importance in their investment philosophy.
3. Risk Management through Diversification: The portfolio is well-diversified across asset classes (equity, fixed income) and market segments, aiming to manage risk while capturing broad market returns.

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IMPORTANT DISCLAIMER: This analysis is for informational purposes only and is not intended as investment advice. The information presented is based on publicly available SEC filings and should not be construed as a recommendation to buy, sell, or hold any securities. Past performance does not guarantee future results. All investments carry risk, including the potential loss of principal. Please consult with a qualified financial advisor before making any investment decisions.

Analysis generated on 2025-10-14 | Data source: SEC EDGAR