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Super Investors Winthrop Advisory Group LLC
WA

Winthrop Advisory Group LLC

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$1.61B
Positions
228
Quarter ended
September 30, 2026
Filed
October 22, 2026

Reported portfolio value by quarter (36 quarters reported)

$1.61B $141M
Q4 17 Q4 19 Q4 21 Q4 23 Q4 25 Q3 26

$141M in Q4 2017 → $1.61B now. Hover for any quarter.

Holdings

As reported for the quarter ended September 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
IT Ishares Tr 10.8% Added 2.3% 1,048,904 $174M
IT Ishares Tr 9.5% Added 1.0% 199,800 $153M
IT Ishares Tr 6.7% Added 3.5% 1,431,505 $108M
IT Ishares Tr 6.3% Trimmed 1.1% 244,892 $102M
IQ Invesco Qqq Tr 5.7% Trimmed 1.8% 125,022 $92.6M
SS Schwab Strategic Tr 4.6% Added 2.0% 2,537,451 $74.4M
VI Vanguard Index Fds 4.5% Added 0.1% 194,406 $72.8M
IT Ishares Tr 4.3% Trimmed 0.0% 1,360,141 $68.6M
VM Vanguard Mun Bd Fds 3.9% Added 545% 1,311,481 $62.1M
Apple Inc 3.5% Added 12% 171,711 $57.2M
SS SPDR Series Trust 2.7% Added 1.7% 470,147 $43.3M
IT Ishares Tr 2.5% Added 0.8% 549,679 $39.5M
WT Wisdomtree Tr 2.3% Added 4.8% 374,064 $36.4M
VI Vanguard Index Fds 1.6% Added 3.9% 109,337 $25.3M
VI Vanguard Index Fds 1.6% Added 321% 117,098 $25.3M
IE Invesco Exch Traded Fd Tr Ii 1.5% Added 17% 81,082 $24.7M
IT Ishares Tr 1.5% Trimmed 0.5% 188,713 $23.6M
IT Ishares Tr 1.4% Trimmed 0.4% 543,049 $22.5M
SS State Str SPDR S&P 500 ETF T 1.4% Trimmed 1.0% 29,106 $22.3M
Microsoft Corp 1.3% Trimmed 0.2% 42,445 $21.8M
VS Vanguard Scottsdale Fds 1.0% Added 16% 126,899 $16.4M
DE Dimensional ETF Trust 0.9% Trimmed 0.5% 313,623 $13.9M
I Ishares Inc 0.8% Added 1.8% 161,181 $13.1M
IT Ishares Tr 0.8% Added 44% 134,763 $12.8M
Amazon Com Inc 0.8% Added 2.9% 50,898 $12.7M
Park Aerospace Corp 0.8% New 422,273 $12.5M
VS Vanguard Star Fds 0.8% Added 2.9% 144,134 $12.2M
JP J P Morgan Exchange Traded F 0.7% Added 21% 238,570 $12M
SS Schwab Strategic Tr 0.7% Trimmed 0.5% 365,163 $11.9M
VI Vanguard Index Fds 0.7% Trimmed 0.6% 131,306 $11.8M
Nvidia Corporation 0.6% Added 0.5% 42,427 $9.7M
Alphabet Inc 0.5% Added 1.9% 25,671 $8.83M
IT Ishares Tr 0.4% Trimmed 1.3% 16,500 $7.12M
Jpmorgan Chase & Co 0.4% Added 2.5% 19,889 $6.58M
IT Ishares Tr 0.4% Trimmed 2.1% 45,877 $6.53M
VI Vanguard Intl Equity Index F 0.4% Trimmed 0.9% 109,791 $6.51M
Alphabet Inc 0.4% Added 2.8% 18,527 $6.31M
IT Ishares Tr 0.4% Trimmed 0.5% 24,334 $6.03M
GS Goldman Sachs ETF Tr 0.4% Trimmed 0.9% 131,613 $6.03M
LF Lpl Finl Hldgs Inc 0.4% Trimmed 1.3% 19,508 $5.97M
Meta Platforms Inc 0.4% Trimmed 2.2% 7,911 $5.74M
VS Vanguard Specialized Funds 0.3% Added 3.5% 22,472 $5.24M
SS Schwab Strategic Tr 0.3% Trimmed 1.1% 168,757 $5.06M
VI Vanguard Index Fds 0.3% Added 3.1% 6,650 $4.66M
BH Berkshire Hathaway Inc Del 0.3% Added 3.8% 9,249 $4.61M
SS SPDR Series Trust 0.3% Trimmed 0.4% 34,138 $4.2M
Tesla Inc 0.2% Added 7.3% 10,490 $3.72M
Visa Inc 0.2% Added 0.2% 10,312 $3.71M
Johnson & Johnson 0.2% Added 28% 13,980 $3.7M
Broadcom Inc 0.2% Added 12% 9,354 $3.29M
IT Ishares Tr 0.2% Added 0.8% 41,511 $3.13M
EL Eli Lilly & Co 0.2% Added 35% 2,596 $3M
SS State Str SPDR S&P Midcap 40 0.2% Trimmed 1.5% 4,520 $2.98M
VS Vanguard Scottsdale Fds 0.2% Added 1.9% 24,927 $2.71M
Walmart Inc 0.2% Added 15% 25,767 $2.68M
VW Vanguard Whitehall Fds 0.2% Added 106% 16,651 $2.58M
Home Depot Inc 0.2% Trimmed 1.3% 8,807 $2.51M
DE Dimensional ETF Trust 0.1% Added 0.0% 29,096 $2.42M
IT Ishares Tr 0.1% Added 1.4% 22,691 $2.2M
CS Cisco Sys Inc 0.1% Added 2.3% 19,709 $2.12M

Showing top 60 of 228 positions.

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q3 2026

quarter ended September 30, 2026 · filed October 22, 2026

Company Action Shares changed Value of change % of portfolio
VM Vanguard Mun Bd Fds Added +1,108,297 +$52.5M 3.9%
VI Vanguard Index Fds Added +89,277 +$19.3M 1.6%
Park Aerospace Corp New +422,273 +$12.5M 0.8%
JP J P Morgan Exchange Traded F Trimmed −134,184 −$6.32M —
Apple Inc Added +18,122 +$6.04M 3.5%
IT Ishares Tr Added +41,145 +$3.91M 0.8%
IT Ishares Tr Added +23,098 +$3.84M 10.8%
IT Ishares Tr Added +48,837 +$3.69M 6.7%
IE Invesco Exch Traded Fd Tr Ii Added +12,049 +$3.67M 1.5%
VS Vanguard Scottsdale Fds Added +17,432 +$2.25M 1.0%

Showing the 10 largest of 229 changes.

Q2 2026

quarter ended June 30, 2026 · filed July 17, 2026

Company Action Shares changed Value of change % of portfolio
IT Ishares Tr Added +142,056 +$17.6M 1.6%
VI Vanguard Index Fds Added +110,002 +$9.48M 0.8%
IT Ishares Tr Added +57,491 +$9.44M 11.3%
IT Ishares Tr Added +111,706 +$8.5M 7.1%
JP J P Morgan Exchange Traded F New +146,850 +$7.37M 0.5%
IT Ishares Tr Added +9,737 +$7.29M 10.0%
IT Ishares Tr Added +135,806 +$6.87M 4.6%
IE Invesco Exch Traded Fd Tr Ii Added +19,716 +$5.97M 1.4%
WT Wisdomtree Tr Added +62,416 +$5.97M 2.3%
IT Ishares Tr Added +52,267 +$4.99M 0.6%

Showing the 10 largest of 228 changes.

Q1 2026

quarter ended March 31, 2026 · filed April 13, 2026

Company Action Shares changed Value of change % of portfolio
IT Ishares Tr New +558,670 +$21.8M 1.8%
IT Ishares Tr Added +308,598 +$20.8M 3.0%
IT Ishares Tr Added +145,750 +$9.98M 7.1%
IT Ishares Tr Added +50,003 +$7.12M 11.3%
IT Ishares Tr Added +6,443 +$4.21M 10.0%
WT Wisdomtree Tr Added +39,232 +$3.45M 2.1%
BH Berkshire Hathaway Inc Del Trimmed −7,188 −$3.44M 0.3%
IE Invesco Exch Traded Fd Tr Ii Added +13,076 +$3.11M 1.0%
VS Vanguard Scottsdale Fds Added +23,067 +$2.53M 0.8%
SS Schwab Strategic Tr Added +100,796 +$2.53M 4.9%

Showing the 10 largest of 199 changes.

Q4 2025

quarter ended December 31, 2025 · filed January 21, 2026

Company Action Shares changed Value of change % of portfolio
VS Vanguard Scottsdale Fds Added +49,091 +$5.98M 0.6%
IT Ishares Tr Added +77,711 +$5.22M 6.4%
IQ Invesco Qqq Tr Trimmed −6,554 −$4.03M 6.7%
WT Wisdomtree Tr Added +41,283 +$3.69M 1.9%
IT Ishares Tr Added +17,865 +$2.66M 11.6%
IT Ishares Tr Trimmed −6,058 −$2.26M 7.8%
IT Ishares Tr Added +32,893 +$2.17M 1.3%
IT Ishares Tr Trimmed −39,202 −$1.98M 5.0%
BH Berkshire Hathaway Inc Del Added +7,062 +$1.76M 0.3%
IE Invesco Exch Traded Fd Tr Ii Added +5,761 +$1.46M 0.8%

Showing the 10 largest of 191 changes.

Q3 2025

quarter ended September 30, 2025 · filed October 24, 2025

Company Action Shares changed Value of change % of portfolio
IT Ishares Tr Added +35,636 +$5.19M 11.5%
IT Ishares Tr Added +78,982 +$5.13M 6.0%
I Ishares Inc Added +47,656 +$3.14M 0.7%
VI Vanguard Index Fds Added +11,312 +$2.37M 1.6%
IT Ishares Tr Added +3,495 +$2.34M 10.5%
IE Invesco Exch Traded Fd Tr Ii Added +9,153 +$2.26M 0.7%
WT Wisdomtree Tr Added +21,071 +$1.87M 1.7%
IT Ishares Tr Trimmed −27,299 −$1.78M 1.1%
IQ Invesco Qqq Tr Added +2,690 +$1.62M 7.2%
VS Vanguard Scottsdale Fds New +12,700 +$1.53M 0.1%

Showing the 10 largest of 178 changes.

Q2 2025

quarter ended June 30, 2025 · filed July 23, 2025

Company Action Shares changed Value of change % of portfolio
SS Schwab Strategic Tr Added +852,738 +$20.3M 5.3%
IT Ishares Tr Added +26,957 +$9.15M 8.4%
IT Ishares Tr Added +12,776 +$7.93M 10.6%
VI Vanguard Index Fds Added +16,616 +$7.29M 0.8%
VI Vanguard Index Fds Added +23,694 +$7.22M 5.7%
VS Vanguard Star Fds Added +99,430 +$6.87M 0.7%
IT Ishares Tr Added +49,091 +$6.63M 11.3%
SS SPDR Ser Tr Added +55,239 +$4.14M 3.5%
IQ Invesco Qqq Tr Added +6,788 +$3.75M 7.1%
Microsoft Corp Added +6,997 +$3.48M 1.8%

Showing the 10 largest of 169 changes.

Q1 2025

quarter ended March 31, 2025 · filed April 08, 2025

Company Action Shares changed Value of change % of portfolio
Amazon Com Inc Trimmed −411,864 −$78.4M 0.9%
IT Ishares Tr New +1,134,105 +$57.5M 6.9%
IT Ishares Tr Added +162,790 +$9.03M 6.1%
VM Vanguard Mun Bd Fds Added +163,216 +$8.1M 1.1%
IT Ishares Tr Trimmed −20,237 −$6.21M 8.5%
WT Wisdomtree Tr Added +49,448 +$3.95M 1.8%
IT Ishares Tr Trimmed −8,137 −$2.94M 1.8%
SS SPDR S&P 500 ETF Tr Trimmed −5,052 −$2.83M 1.8%
SS SPDR Ser Tr Trimmed −30,548 −$2.08M 3.5%
Microsoft Corp Trimmed −5,439 −$2.04M 1.4%

Showing the 10 largest of 148 changes.

Q4 2024

quarter ended December 31, 2024 · filed January 13, 2025

Company Action Shares changed Value of change % of portfolio
VM Vanguard Mun Bd Fds Trimmed −142,748 −$71.3M 1.2%
SA Ssga Active Tr Exited −992,564 −$50.4M —
IT Ishares Tr Trimmed −44,652 −$26.3M 11.7%
SS Schwab Strategic Tr Added +1,077,345 +$24.5M 4.0%
IT Ishares Tr Added +408,828 +$21.3M 4.7%
WT Wisdomtree Tr New +137,110 +$11.1M 1.3%
Amazon Com Inc Added +411,379 +$9.03M 1.2%
SS Schwab Strategic Tr Added +246,435 +$6.73M 1.2%
SS Select Sector SPDR Tr Trimmed −67,099 −$5.75M 0.1%
IT Ishares Tr New +44,618 +$4.53M 0.5%

Showing the 10 largest of 158 changes.

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