CIK: 0000919497
Total reported value
$876.9M
Reporting period: 2026-03-31 · Number of holdings: 164
MIDDLETON & CO INC/MA disclosed 164 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $876.9M and a quarterly turnover rate of 15.7%.
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Middleton & Co Inc/ma's disclosed holdings carry a Herfindahl concentration index of 0.025 — mathematically equivalent to about 40 equally-sized positions, well below its 164 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 1.76), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Add XOM
+1.2% $5.9M
Trim GOOGL
-6.3% -$9.6M
Trim ADBE
-34.2% -$5.6M
Trim MSFT
-0.9% -$6.7M
Add COST
-0.6% $3.2M
Trim INTU
-1.1% -$5.5M
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 6.81% | -0.56% | -6.27% | |
| 2 | AAPL | Apple INC | Stock-Tech | 6.49% | -0.07% | -1.47% | |
| 3 | AMZN | Amazon.com INC | Stock-Consumer Disc | 5.83% | -0.22% | -0.55% | |
| 4 | AVGO | Broadcom INC | Stock-Tech | 4.54% | -0.21% | -0.53% | |
| 5 | IVV | Ishares Core S&p 500 ETF | ETF-Large Cap & Growth | 3.61% | +0.13% | +1.27% | |
| 6 | COST | Costco Wholesale CORP | Stock-Consumer Staples | 2.79% | +0.53% | -0.60% | |
| 7 | V | Visa Inc-class A Shares | Stock-Financials | 2.44% | -0.21% | -0.60% | |
| 8 | MSFT | Microsoft CORP | Stock-Tech | 2.41% | -0.55% | -0.91% | |
| 9 | JPM | Jpmorgan Chase & Co | Stock-Financials | 2.40% | -0.08% | -1.35% | |
| 10 | XOM | Exxon Mobil CORP | Stock-Energy | 2.24% | +0.78% | +1.25% | |
| 11 | ORLY | O'reilly Automotive INC | Stock-Consumer Disc | 2.11% | — | -0.62% | |
| 12 | ABBV | Abbvie INC | Stock-Healthcare | 1.94% | +0.01% | -1.70% | |
| 13 | PANW | Palo Alto Networks INC | Stock-Tech | 1.85% | -0.05% | +4.28% | |
| 14 | NEE | Nextera Energy INC | Stock-Utilities | 1.84% | +0.33% | -2.07% | |
| 15 | MRK | Merck & Co. INC. | Stock-Healthcare | 1.68% | — | -15.97% | |
| 16 | IEF | Ishares 7-10 Year Treasury B | ETF-Gov Bonds | 1.49% | — | +4.64% | |
| 17 | DHR | Danaher CORP | Stock-Healthcare | 1.48% | -0.19% | -0.35% | |
| 18 | NVDA | Nvidia CORP | Stock-Tech | 1.47% | — | +7.28% | |
| 19 | EQIX | Equinix INC | Stock-Real Estate | 1.38% | +0.39% | +1.55% | |
| 20 | LLY | Eli Lilly & Co | Stock-Healthcare | 1.36% | -0.09% | +2.26% | |
| 21 | BRK-B | Berkshire Hathaway Inc-cl B | Stock-Other | 1.36% | +0.02% | -0.86% | |
| 22 | NOW | Servicenow INC | Stock-Tech | 1.31% | -0.30% | +11.00% | |
| 23 | CRM | Salesforce INC | Stock-Tech | 1.28% | -0.43% | -1.06% | |
| 24 | QCOM | Qualcomm INC | Stock-Tech | 1.26% | -0.31% | -0.93% | |
| 25 | SPGI | S&p Global INC | Stock-Financials | 1.25% | -0.15% | +2.44% | |
| 26 | VGSH | Vanguard Short-term Treasury | ETF-Gov Bonds | 1.23% | — | +3.38% | |
| 27 | STE | STERIS plc | Stock-Healthcare | 1.21% | -0.10% | -0.68% | |
| 28 | VGIT | Vanguard Intermediate-term T | ETF-Other | 1.16% | +0.23% | +17.79% | |
| 29 | INTU | Intuit INC | Stock-Tech | 1.14% | -0.50% | -1.08% | |
| 30 | XYL | Xylem INC | Stock-Industrials | 1.12% | -0.05% | +1.44% | |
| 31 | ETN | Eaton Corporation plc | Stock-Industrials | 1.08% | +0.28% | +11.61% | |
| 32 | IQLT | Ishares Msci International Q | ETF-Other | 1.06% | +0.30% | +28.02% | |
| 33 | AMT | American Tower CORP | Stock-Real Estate | 1.01% | — | -0.50% | |
| 34 | VRSK | Verisk Analytics INC | Stock-Industrials | 0.99% | -0.09% | +0.88% | |
| 35 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 0.97% | -0.14% | -11.03% | |
| 36 | SNPS | Synopsys INC | Stock-Tech | 0.94% | -0.02% | +8.81% | |
| 37 | SYK | Stryker CORP | Stock-Healthcare | 0.92% | — | +5.07% | |
| 38 | ECL | Ecolab INC | Stock-Materials | 0.91% | — | -3.16% | |
| 39 | META | Meta Platforms Inc-class A | Stock-Comm Services | 0.90% | -0.11% | -3.83% | |
| 40 | IDXX | Idexx Laboratories INC | Stock-Healthcare | 0.84% | -0.10% | +0.16% | |
| 41 | MDLZ | Mondelez International Inc-a | Stock-Consumer Staples | 0.80% | +0.12% | +2.96% | |
| 42 | MSCI | Msci INC | Stock-Financials | 0.76% | — | -0.88% | |
| 43 | AWK | American Water Works Co INC | Stock-Utilities | 0.75% | +0.17% | +16.39% | |
| 44 | IQV | Iqvia Holdings INC | Stock-Healthcare | 0.67% | -0.42% | -24.84% | |
| 45 | WCN | Waste Connections INC | Stock-Industrials | 0.64% | +0.15% | +31.79% | |
| 46 | CB | Chubb Limited | Stock-Financials | 0.64% | — | -1.95% | |
| 47 | IJR | Ishares Core S&p Small-cap E | ETF-Small Cap | 0.63% | — | +1.75% | |
| 48 | PEP | Pepsico INC | Stock-Consumer Staples | 0.63% | +0.12% | +5.56% | |
| 49 | IJH | Ishares Core S&p Midcap ETF | ETF-Other | 0.61% | — | +0.87% | |
| 50 | PAAA | Pgim Aaa Clo ETF | ETF-Other | 0.60% | — | +13.96% |
Performance for Q3 2026
-0.4%
Performance Last 4 Quarters
+14%
Based on 74% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 164 | $876.9M | 16 | |
| 2025-12-31 | 163 | $941.8M | 10 | |
| 2025-09-30 | 166 | $925.3M | 21 | |
| 2025-06-30 | 161 | $890.3M | 0 | |
| 2025-03-31 | 156 | $856.0M | 100 | |
| 2024-12-31 | 158 | $905.1M | 0 | |
| 2024-09-30 | 166 | $905.0M | 0 | |
| 2024-06-30 | 164 | $860.7M | 0 | |
| 2024-03-31 | 167 | $867.1M | 0 | |
| 2023-12-31 | 157 | $801.8M | 0 | |
| 2023-09-30 | 147 | $723.7M | 0 | |
| 2023-06-30 | 153 | $754.1M | 0 | |
| 2023-03-31 | 154 | $695.9M | 0 | |
| 2022-12-31 | 156 | $674.8M | 0 | |
| 2022-09-30 | 145 | $657.2M | 0 | |
| 2022-06-30 | 173 | $780.5M | 0 | |
| 2022-03-31 | 182 | $937.0M | 0 | |
| 2021-12-31 | 182 | $1.0B | 0 | |
| 2021-09-30 | 180 | $934.3M | 0 | |
| 2021-06-30 | 178 | $922.6M | 100 | |
| 2021-03-31 | 174 | $887.4M | 12 | |
| 2020-12-31 | 169 | $845.5M | 14 | |
| 2020-09-30 | 160 | $755.0M | 15 | |
| 2020-06-30 | 169 | $694.3M | 23 | |
| 2020-03-31 | 161 | $571.7M | 23 | |
| 2019-12-31 | 162 | $702.7M | 11 | |
| 2019-09-30 | 161 | $648.7M | 7 | |
| 2019-06-30 | 159 | $645.1M | 8 | |
| 2019-03-31 | 158 | $623.5M | 18 | |
| 2018-12-31 | 158 | $543.7M | 21 | |
| 2018-09-30 | 174 | $641.0M | 12 | |
| 2018-06-30 | 171 | $584.3M | 10 | |
| 2018-03-31 | 171 | $558.6M | 14 | |
| 2017-12-31 | 181 | $595.9M | 19 | |
| 2017-09-30 | 190 | $553.5M | 26 | |
| 2017-06-30 | 171 | $469.5M | 14 | |
| 2017-03-31 | 175 | $456.0M | 14 | |
| 2016-12-31 | 177 | $443.0M | 18 | |
| 2016-09-30 | 181 | $446.3M | 23 | |
| 2016-06-30 | 180 | $435.0M | 15 | |
| 2016-03-31 | 180 | $431.3M | 15 | |
| 2015-12-31 | 182 | $448.3M | 25 | |
| 2015-09-30 | 170 | $421.7M | 18 | |
| 2015-06-30 | 180 | $461.4M | 12 | |
| 2015-03-31 | 182 | $457.5M | 15 | |
| 2014-12-31 | 183 | $446.8M | 21 | |
| 2014-09-30 | 187 | $425.7M | 15 | |
| 2014-06-30 | 180 | $439.9M | 17 | |
| 2014-03-31 | 176 | $429.1M | 47 | |
| 2013-12-31 | 160 | $382.0M | 28 | |
| 2013-09-30 | 171 | $380.3M | 24 | |
| 2013-06-30 | 199 | $340.7M | — |
Middleton & Co Inc/ma's most significant position changes for 2026-03-31: New buy: Amphenol Corp-cl A (APH); New buy: Boston Scientific CORP (BSX); New buy: Avantis Intl S/c Value ETF (AVDV); Add: Exxon Mobil CORP (XOM) — shares +1.25%; Trim: Alphabet Inc-cl A (GOOGL) — shares -6.27%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | XOM | Exxon Mobil CORP | +0.8% | +1.25% | Add |
| 2 | COST | Costco Wholesale CORP | +0.5% | -0.60% | Trim |
| 3 | EQIX | Equinix INC | +0.4% | +1.55% | Add |
| 4 | NEE | Nextera Energy INC | +0.3% | -2.07% | Trim |
| 5 | IQLT | Ishares Msci International Q | +0.3% | +28.02% | Add |
| 6 | ETN | Eaton Corporation plc | +0.3% | +11.61% | Add |
| 7 | VGIT | Vanguard Intermediate-term T | +0.2% | +17.79% | Add |
| 8 | UBER | Uber Technologies INC | +0.2% | +330.66% | Add |
| 9 | AWK | American Water Works Co INC | +0.2% | +16.39% | Add |
| 10 | WCN | Waste Connections INC | +0.2% | +31.79% | Add |
| 11 | ODFL | Old Dominion Freight Line | +0.2% | -0.94% | Trim |
| 12 | IVV | Ishares Core S&p 500 ETF | +0.1% | +1.27% | Add |
| 13 | PEP | Pepsico INC | +0.1% | +5.56% | Add |
| 14 | MDLZ | Mondelez International Inc-a | +0.1% | +2.96% | Add |
| 15 | CVX | Chevron CORP | +0.1% | -2.02% | Trim |
| 16 | BRK-B | Berkshire Hathaway Inc-cl B | 0% | -0.86% | Trim |
| 17 | ABBV | Abbvie INC | 0% | -1.70% | Trim |
| 18 | SNPS | Synopsys INC | 0% | +8.81% | Add |
| 19 | PANW | Palo Alto Networks INC | -0.1% | +4.28% | Add |
| 20 | XYL | Xylem INC | -0.1% | +1.44% | Add |
| 21 | ABT | Abbott Laboratories | -0.1% | +1.08% | Add |
| 22 | AAPL | Apple INC | -0.1% | -1.47% | Trim |
| 23 | ROP | Roper Technologies INC | -0.1% | -8.58% | Trim |
| 24 | JPM | Jpmorgan Chase & Co | -0.1% | -1.35% | Trim |
| 25 | RNR | RenaissanceRe Holdings Ltd. | -0.1% | -41.24% | Trim |
| 26 | LLY | Eli Lilly & Co | -0.1% | +2.26% | Add |
| 27 | VRSK | Verisk Analytics INC | -0.1% | +0.88% | Add |
| 28 | BR | Broadridge Financial Solutio | -0.1% | -3.42% | Trim |
| 29 | STE | STERIS plc | -0.1% | -0.68% | Trim |
| 30 | IDXX | Idexx Laboratories INC | -0.1% | +0.16% | Add |
| 31 | META | Meta Platforms Inc-class A | -0.1% | -3.83% | Trim |
| 32 | GOOG | Alphabet Inc-cl C | -0.1% | -11.03% | Trim |
| 33 | SPGI | S&p Global INC | -0.2% | +2.44% | Add |
| 34 | DHR | Danaher CORP | -0.2% | -0.35% | Trim |
| 35 | FTV | Fortive CORP | -0.2% | -44.54% | Trim |
| 36 | AVGO | Broadcom INC | -0.2% | -0.53% | Trim |
| 37 | V | Visa Inc-class A Shares | -0.2% | -0.60% | Trim |
| 38 | AMZN | Amazon.com INC | -0.2% | -0.55% | Trim |
| 39 | CEG | Constellation Energy | -0.2% | -20.82% | Trim |
| 40 | NOW | Servicenow INC | -0.3% | +11.00% | Add |
| 41 | QCOM | Qualcomm INC | -0.3% | -0.93% | Trim |
| 42 | IQV | Iqvia Holdings INC | -0.4% | -24.84% | Trim |
| 43 | CRM | Salesforce INC | -0.4% | -1.06% | Trim |
| 44 | INTU | Intuit INC | -0.5% | -1.08% | Trim |
| 45 | MSFT | Microsoft CORP | -0.6% | -0.91% | Trim |
| 46 | GOOGL | Alphabet Inc-cl A | -0.6% | -6.27% | Trim |
| 47 | ADBE | Adobe INC | -0.6% | -34.18% | Trim |
| 48 | APH | Amphenol Corp-cl A | — | NEW | New buy |
| 49 | BSX | Boston Scientific CORP | — | NEW | New buy |
| 50 | AVDV | Avantis Intl S/c Value ETF | — | NEW | New buy |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-08 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-01-29 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-10-29 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-06 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-09 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-05 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-10-23 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-12 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-14 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-13 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-10-26 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-07-28 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-04-28 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-09 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-02 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-07-21 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-12 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-09 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-11-08 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-08-13 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-06 | Amendment | View on EDGAR |
| 2021-03-31 | 2021-05-06 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-01-29 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-10-30 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-07-28 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-04-22 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-01-29 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-10-21 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-07-25 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-04-25 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-02-01 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-10-25 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-07-26 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-05-04 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-01-25 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-10-31 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-07-18 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-04-19 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-02-02 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2016-10-27 | 13F-HR | View on EDGAR |
| 2016-06-30 | 2016-07-21 | 13F-HR | View on EDGAR |
| 2016-03-31 | 2016-05-03 | 13F-HR | View on EDGAR |
| 2015-12-31 | 2016-01-19 | 13F-HR | View on EDGAR |
| 2015-09-30 | 2015-10-16 | 13F-HR | View on EDGAR |
| 2015-06-30 | 2015-07-15 | 13F-HR | View on EDGAR |
| 2015-03-31 | 2015-04-17 | 13F-HR | View on EDGAR |
| 2014-12-31 | 2015-01-23 | 13F-HR | View on EDGAR |
| 2014-09-30 | 2014-10-21 | 13F-HR | View on EDGAR |
| 2014-06-30 | 2014-07-24 | 13F-HR | View on EDGAR |
| 2014-03-31 | 2014-04-22 | 13F-HR | View on EDGAR |
| 2013-12-31 | 2014-02-06 | 13F-HR | View on EDGAR |
| 2013-09-30 | 2013-10-23 | 13F-HR | View on EDGAR |
| 2013-06-30 | 2013-07-31 | 13F-HR | View on EDGAR |
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