Institutional Manager · CIK 0001739043

Winthrop Advisory Group LLC

BOSTON, MA · File #028-18734

Latest AUM

$1.18B

Positions

188

Top-10 Concentration

70.2%

Filings

Portfolio Value Over Time

2024-03

2024-06

2024-09

2024-12

2025-03

2025-06

2025-09

2025-12

Biggest QoQ Changes

Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.

Action	Issuer	Ticker / CUSIP	Δ Shares	Flow ($)	Price Effect
ADD	VANGUARD SCOTTSDALE FDS	92206C680	+49,091	+$6.0M	+$15,896
ADD	ISHARES TR	464288240	+77,711	+$5.2M	+$2.2M
REDUCE	INVESCO QQQ TR	IVZ	-6,554	-$4.0M	+$1.8M
ADD	WISDOMTREE TR	WT	+41,283	+$3.7M	+$100,531
ADD	ISHARES TR	464287150	+17,865	+$2.7M	+$2.7M
REDUCE	ISHARES TR	464287622	-6,058	-$2.3M	+$2.0M
ADD	ISHARES TR	464287507	+32,893	+$2.2M	+$144,693
REDUCE	ISHARES TR	46434V878	-39,202	-$2.0M	-$206,805
ADD	BERKSHIRE HATHAWAY INC DEL	BRK-A	+7,062	+$1.8M	-$2.3M
ADD	INVESCO EXCH TRADED FD TR II	IVZ	+5,761	+$1.5M	+$176,762

Sector Allocation

Financials

10.2%$120.7M

Technology

6.5%$77.3M

Consumer Discretionary

1.8%$20.9M

Healthcare

0.7%$8.0M

Communication Services

0.6%$6.7M

0.5%$5.6M

0.4%$4.5M

0.1%$1.6M

0.0%$268,820

0.0%$279,371

Filing History

Jan 21, 202613F HOLDINGS REPORT (Amended)Q/E Dec 2025275 pos · $1.18B
Jan 21, 202613F HOLDINGS REPORTQ/E Dec 2025188 pos · $1.18B
Oct 24, 202513F HOLDINGS REPORTQ/E Sep 2025191 pos · $1.14B
Jul 23, 202513F HOLDINGS REPORTQ/E Jun 2025181 pos · $1.04B
Apr 8, 202513F HOLDINGS REPORTQ/E Mar 2025156 pos · $831.9M
Jan 13, 202513F HOLDINGS REPORTQ/E Dec 2024156 pos · $833.3M
Oct 31, 202413F HOLDINGS REPORTQ/E Sep 2024153 pos · $890.0M
Jul 18, 202413F HOLDINGS REPORTQ/E Jun 2024145 pos · $736.7M
Jul 18, 202413F HOLDINGS REPORT (Amended)Q/E Jun 2024144 pos · $735.6M
Apr 17, 202413F HOLDINGS REPORTQ/E Mar 2024141 pos · $691.3M
Nov 3, 202313F HOLDINGS REPORTQ/E Dec 2023127 pos · $609.1M

Top 20 Holdings — Dec 2025

#	Issuer	Ticker	Shares	Value	% of Portfolio
1	ISHARES TR	464287150	918,312	$136.5M	12.44%
2	ISHARES TR	464287200	181,625	$124.4M	11.33%
3	ISHARES TR	464287622	247,833	$92.6M	8.43%
4	INVESCO QQQ TR	IVZ	129,636	$79.6M	7.26%
5	ISHARES TR	464288240	1,125,212	$75.5M	6.88%
6	VANGUARD INDEX FDS	922908769	187,759	$62.9M	5.74%
7	SCHWAB STRATEGIC TR	808524102	2,294,238	$60.2M	5.48%
8	ISHARES TR	46434V878	1,177,437	$59.6M	5.43%
9	APPLE INC	AAPL	153,979	$41.9M	3.81%
10	SPDR SERIES TRUST	78464A805	455,439	$37.6M	3.42%
11	WISDOMTREE TR	WT	255,277	$22.8M	2.08%
12	ISHARES TR	464287614	47,966	$22.7M	2.07%
13	SPDR S&P 500 ETF TR	SPY	28,550	$19.5M	1.78%
14	MICROSOFT CORP	MSFT	39,614	$19.2M	1.75%
15	VANGUARD INDEX FDS	922908652	90,608	$18.9M	1.73%
16	ISHARES TR	464287507	228,413	$15.1M	1.37%
17	DIMENSIONAL ETF TRUST	25434V708	322,510	$12.8M	1.16%
18	AMAZON COM INC	AMZN	47,518	$11.0M	1.00%
19	SCHWAB STRATEGIC TR	808524797	380,637	$10.4M	0.95%
20	VANGUARD MUN BD FDS	922907746	194,004	$9.8M	0.89%