Q3 2026 13F · SEC CIK 919497

Middleton & Co Inc/ma

Investment managerFiled 2026-10-23 for Q3 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $942.9M
Reported positions: 163
Top holdings a year, 3 yrs: +19.1%
Average holding period: 10.3 yrs

Middleton & Co Inc/ma is an investment manager that reported 163 positions worth $942.9M in its Q3 2026 13F, filed 2026-10-23. Its largest holdings were Apple Inc (AAPL, 7.6%), Alphabet Inc (GOOGL, 6.9%), Amazon Com Inc (AMZN, 6.2%). A portfolio copying its top holdings returned 19.1% a year over the last 3 years, against 20.4% for the S&P 500.

Middleton & Co Inc/ma holdings largest 50 of 163 positions.

Weights are shares of the filer's total reported 13F value, compared with Q2 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.

Middleton & Co Inc/ma 13F holdings
Stock	% of 13F value	Q2 2026	Shares	Share change	Reported value
AAPLApple Inc	7.6%	6.8%	214,116	-2.8%	$71.3M
GOOGLAlphabet Inc	6.9%	7.4%	187,785	-4.1%	$64.6M
AMZNAmazon Com Inc	6.2%	6.1%	233,810	-2.6%	$58.3M
AVGOBroadcom Inc	4.4%	4.9%	117,523	-3.0%	$41.3M
IVVIshares Tr	4.0%	3.8%	49,841	+3.2%	$38.2M
PANWPalo Alto Networks Inc	3.6%	3.3%	86,365	-5.8%	$34.3M
MSFTMicrosoft Corp	3.1%	2.2%	56,143	-0.5%	$28.8M
VVisa Inc	2.6%	2.5%	67,834	-2.3%	$24.4M
JPMJpmorgan Chase & Co	2.3%	2.4%	66,394	-3.0%	$22.0M
COSTCostco Wholesale Corporation	2.3%	2.4%	23,762	-0.3%	$21.6M
ABBVAbbvie Inc	2.0%	2.0%	72,606	-3.5%	$19.0M
NVDANvidia Corporation	1.9%	1.7%	79,914	-2.1%	$18.3M
XOMExxonmobil Holdings Corp	1.9%	—	107,476	—	$17.5M
ORLYOreilly Automotive Inc	1.7%	1.9%	192,164	-1.4%	$16.4M
NOWServicenow Inc	1.6%	1.2%	111,337	-1.6%	$14.9M
LLYEli Lilly & Co	1.5%	1.7%	12,579	-3.4%	$14.6M
QCOMQualcomm Inc	1.5%	1.5%	78,535	+1.1%	$14.5M
MRKMerck & Co Inc	1.5%	1.5%	99,242	-10.0%	$14.4M
DHRDanaher Corp Del	1.5%	1.3%	64,130	-3.7%	$14.2M
CRMSalesforce Inc	1.4%	1.0%	57,423	-2.6%	$13.2M
NEENextera Energy Inc	1.3%	1.6%	164,753	-2.6%	$12.5M
BRK-BBerkshire Hathaway Inc Del	1.3%	1.4%	24,774	-3.7%	$12.3M
ETNEaton Corp PLC	1.2%	1.2%	26,152	-2.4%	$11.2M
EQIXEquinix Inc	1.2%	1.3%	10,906	-4.7%	$11.0M
METAMeta Platforms Inc	1.1%	0.9%	14,150	-2.3%	$10.3M
VGSHVanguard Scottsdale Fds	1.1%	1.1%	175,239	-5.2%	$10.1M
IEFIshares Tr	1.0%	1.3%	110,634	-12.6%	$9.9M
SPGIS&p Global Inc	1.0%	1.1%	24,514	-2.5%	$9.7M
VGITVanguard Scottsdale Fds	1.0%	1.1%	166,554	-6.3%	$9.4M
STESteris PLC	1.0%	1.0%	44,863	-3.6%	$9.4M
IQLTIshares Tr	1.0%	1.1%	190,318	-9.1%	$9.4M
IQVIqvia Hldgs Inc	0.9%	0.7%	32,993	-0.7%	$8.9M
GOOGAlphabet Inc	0.9%	1.0%	25,254	-3.5%	$8.6M
SNPSSynopsys Inc	0.9%	1.0%	18,675	-8.6%	$8.1M
XYLXylem Inc	0.8%	1.0%	78,857	-2.0%	$8.0M
AMTAmerican Tower Corp	0.8%	0.8%	46,374	-4.1%	$7.6M
VRSKVerisk Analytics Inc	0.8%	0.9%	45,096	-3.7%	$7.6M
ECLEcolab Inc	0.8%	0.8%	27,447	-4.4%	$7.5M
WCNWaste Connections Inc	0.8%	0.7%	46,856	+11.9%	$7.2M
IDXXIdexx Labs Inc	0.7%	0.7%	12,929	-1.7%	$6.8M
PAAAPgim ETF Tr	0.7%	0.7%	128,355	+7.5%	$6.6M
MDLZMondelez International	0.7%	0.7%	112,332	-7.9%	$6.5M
SYKStryker Corporation	0.7%	0.8%	22,995	-6.6%	$6.3M
MSCIMsci Inc	0.7%	0.7%	11,667	-1.9%	$6.3M
AWKAmerican Wtr Wks Co Inc New Com	0.7%	0.7%	48,347	-3.3%	$6.3M
IJRIshares Tr	0.7%	0.7%	45,189	+3.3%	$6.1M
IJHIshares Tr	0.6%	0.6%	79,010	+1.4%	$5.7M
APHAmphenol Corp	0.6%	0.6%	65,284	+89.3%	$5.5M
INTUIntuit	0.6%	—	19,927	—	$5.5M
CBChubb Limited	0.6%	0.6%	16,698	-0.1%	$5.4M

What Middleton & Co Inc/ma bought and sold in Q3 2026, against Q2 2026.

New positions

Q2 2026's filing was too long to tell new positions apart.

Share counts compared with the Q2 2026 13F; a split also changes share counts. The latest filing lists more than 50 positions, so a position that left the top 50 may still be held.

How the holdings did against the S&P 500.

1 year: +18.2% /yr; S&P 500 +20.1%
3 years: +19.1% /yr; S&P 500 +20.4%
5 years: +8.6% /yr; S&P 500 +11.6%

A portfolio of the filer's 20 largest 13F positions, weighted by value, bought the trading day after each 13F was filed and held until the next one was: what copying this filer could have earned. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.

Reported 13F value by quarter.

13F value by quarter
Quarter	13F value	Positions
Q3 2026	$942.9M	163
Q2 2026	$941.9M	170
Q1 2026	$876.9M	164
Q4 2025	$941.8M	163
Q3 2025	$925.3M	166
Q2 2025	$890.3M	161
Q1 2025	$856.0M	156
Q4 2024	$905.1M	158
Q3 2024	$905.0M	166
Q2 2024	$860.7M	164
Q1 2024	$867.1M	167
Q4 2023	$801.8M	157

Questions about Middleton & Co Inc/ma's portfolio

What stocks does Middleton & Co Inc/ma own?

Middleton & Co Inc/ma's latest 13F, for Q3 2026 and filed Oct 23, 2026, lists 163 positions worth $942.9M. The largest are Apple Inc (AAPL) at 7.6%, Alphabet Inc (GOOGL) at 6.9%, Amazon Com Inc (AMZN) at 6.2%, Broadcom Inc (AVGO) at 4.4% and Ishares Tr (IVV) at 4.0%.

What did Middleton & Co Inc/ma buy last quarter?

In Q3 2026, Middleton & Co Inc/ma added Amphenol Corp (APH) (+89.3% shares), Waste Connections Inc (WCN) (+11.9% shares) and Pgim ETF Tr (PAAA) (+7.5% shares), compared with its Q2 2026 filing.

What did Middleton & Co Inc/ma sell last quarter?

In Q3 2026, Middleton & Co Inc/ma cut from its top 50 Exxon Mobil Corp (XOM), cut from its top 50 Lam Research Corp (LRCX), Ishares Tr (IEF) (-12.6% shares), Merck & Co Inc (MRK) (-10.0% shares) and Ishares Tr (IQLT) (-9.1% shares), compared with its Q2 2026 filing.

How has Middleton & Co Inc/ma's portfolio performed?

A portfolio copying Middleton & Co Inc/ma's 20 largest 13F holdings each quarter, from the day each filing was public, returned +19.1% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +18.2% against +20.1%. Over 5 years: +8.6% a year against +11.6%.

When is Middleton & Co Inc/ma's next 13F filing due?

13F filings are due 45 days after each quarter ends. Middleton & Co Inc/ma's filing for the quarter ending Dec 31, 2026 is due by Feb 14, 2027; this page updates the day after it is published.