Winthrop Advisory Group LLC

RIA/Wealth

Winthrop Advisory Group LLC is a RIA/Wealth based in Boston, MA led by Max Gustav Winthrop, reporting $2.6B in AUM as of Q3 2025 with 84% ETF concentration and 66% concentrated in top 10 holdings.

CEOMax Gustav Winthrop

Portfolio Value: $1.1B
Positions: 191
Top Holding: ITOT at 11.47%
Last Reported: Q3 2025

Address2 Liberty Square, 9th Floor, Boston, MA, 02109, United States

Top Holdings

Largest long holdings in Winthrop Advisory Group LLC's portfolio (66.2% of total portfolio)

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Holding	Sector	Position	Weight	Traded	Ownership	Owned Since
1 iShares Core S&P Total U.S. Stock Market ITOT	ETF ETF	$131.2M	11.47%	+$5.2M Bought	— 900.4K shares	Q1 2019 Held for 6y 8m
2 iShares Core S&P 500 ETF IVV	ETF ETF	$120.5M	10.54%	+$2.3M Bought	— 180.1K shares	Q4 2017 Held for 7y 11m
3 iShares Russell 1000 IWB	ETF ETF	$92.8M	8.12%	-$1.2M Sold	— 253.9K shares	Q4 2017 Held for 7y 11m
4 Invesco QQQ Trust QQQ	ETF ETF	$81.9M	7.16%	+$1.6M Bought	— 136.2K shares	Q4 2017 Held for 7y 11m
5 iShares MSCI ACWI ex US ACWX	ETF ETF	$68.1M	5.96%	+$5.1M Bought	— 1.0M shares	Q4 2023 Held for 1y 11m
6 Vanguard Total Stock Market VTI	ETF ETF	$63.0M	5.51%	-$253.1K Sold	— 191.4K shares	Q4 2017 Held for 7y 11m
7 BlackRock Ultra Short-Term Bond ICSH	ETF ETF	$61.7M	5.40%	+$943.9K Bought	— 1.2M shares	Q1 2025 Held for 8 months
8 Schwab U.S. Broad Market SCHB	ETF ETF	$59.4M	5.19%	+$597.3K Bought	— 2.3M shares	Q2 2022 Held for 3y 5m
9 Apple AAPL	Consumer Electronics Technology	$40.0M	3.50%	+$313.5K Bought	0.00% 157.0K shares	Q4 2017 Held for 7y 11m
10 SPDR Portfolio S&P 1500 Composite Stock Market ETF SPTM	ETF ETF	$38.1M	3.34%	-$590.1K Sold	— 472.8K shares	Q1 2020 Held for 5y 8m

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Changes

Portfolio activity, position movements, and quarter-over-quarter changes in Winthrop Advisory Group LLC's latest filing

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Market Value

$1.1B

Prior: $1.0B

Q/Q Change

+10.29%

+$106.6M

Net Flows % of MV

+2.51%

Turnover Ratio

2.1%

New Purchases

13 stocks

$5.0M

Added To

85 stocks

+$32.8M

Sold Out Of

8 stocks

$2.9M

Reduced Holdings

67 stocks

-$6.1M

Increased Positions

Position	Shares Δ	Change
1 Vanguard Russell 1000 Growth VONG	New	0 → 12.7K +$1.5M
2 T. Rowe Price Dividend Growth TDVG	New	0 → 18.2K +$801.6K
3 JPMorgan U.S. Quality Factor JQUA	New	0 → 8.7K +$548.8K
4 General Dynamics GD	New	0 → 1.0K +$344.1K
5 ASML ASML ASML	New	0 → 237.0 +$229.8K

Decreased Positions

Position	Shares Δ	Change
1 HCA Healthcare HCA	Sold	3.8K → 0 −$1.5M
2 The AZEK Company AZEK	Sold	5.5K → 0 −$298.9K
3 lululemon athletica LULU	Sold	1.1K → 0 −$255.6K
4 Verisk Analytics, Inc. VRSK	Sold	794.0 → 0 −$247.5K
5 Energy Select Sector SPDR Fund XLE	Sold	2.7K → 0 −$227.0K