13F holdings · Q3 2026

Foster Dykema Cabot & Partners

Waltham, MA · files as Foster Dykema Cabot & Partners, LLC

Holdings as of Sep 30, 2026Filed Oct 30, 2026Next filing due Feb 15, 2027CIK 2011882

Foster Dykema Cabot & Partners reported 352 stocks worth $1.9B in its 13F filing for Q3 2026, filed Oct 30, 2026. Its largest holdings are SPY (16.6%), JPST (12.7%) and ICSH (11.3%). Compared with Q2 2026, the fund opened new positions in VONE, VONV and XOM, added to ICSH, AMZN and MSFT, trimmed SPY, JPST and PWR and sold out of XOM and VGIT.

Reported value$1.9B+10.3% vs last quarter

Stocks held35231 new · 3 sold out

Top 5 weight51.0%fairly concentrated

Turnover12%of the portfolio changed

🔒 A free account shows every holding, what the fund sold and its options.Create free account

Holdings

#	Stock	Value	Weight	Shares	Change	Shares, 8 qtrs	Held
1	SPY Spdr S&P 500 ETF TR	$316M	16.6%	413K	−2,447 (−1%)		8 of 8
2	JPST J P Morgan Exchange Traded F	$240M	12.7%	4.8M	−64K (−1%)		8 of 8
3	ICSH Ishares TR	$214M	11.3%	4.3M	+25K (+1%)		8 of 8
4	AMZN Amazon Com Inc	$106M	5.6%	427K	+192K (+82%)		8 of 8
5	MSFT Microsoft Corp	$92.6M	4.9%	180K	+66K (+57%)		8 of 8
6	APH Amphenol Corp New	$80.2M	4.2%	951K	+460K (+94%)		8 of 8
7	PWR Quanta Svcs Inc	$59.8M	3.1%	93K	−2,468 (−3%)		8 of 8
8	GOOGL Alphabet Inc	$57.1M	3.0%	166K	+1,483 (+1%)		8 of 8
9	NVDA Nvidia Corporation	$55.4M	2.9%	242K	+55K (+30%)		8 of 8
10	AAPL Apple Inc	$54.8M	2.9%	165K	+72K (+77%)		8 of 8
11	ABCD Example Holdings Inc	100	153	206	259	312	365
12	WXYZ Example Holdings Inc	137	190	243	296	349	402
13	QRST Example Holdings Inc	174	227	280	333	386	439
14	LMNO Example Holdings Inc	211	264	317	370	423	476

🔒 342 more holdings in this filing. Create a free account or sign in to see them all.

Positions at Sep 30, 2026, as reported. Change is against the fund's Q2 2026 filing; weight is the share of the fund's reported stocks.

Sold out

held in Q2 2026, gone in Q3 2026

Stock	Value last quarter	Shares sold
XOM Exxon Mobil Corp	$766K	5,600
ATAI BECKLEY NV	$11K	2,045
VGIT Vanguard Scottsdale Fds	$34	1

Reported value

last 8 quarters

$1.3BQ4 '24

$1.2BQ1 '25

$1.4BQ2 '25

$1.5BQ3 '25

$1.6BQ4 '25

$1.6BQ1 '26

$1.7BQ2 '26

$1.9BQ3 '26

The value of the US stocks the fund reported, at quarter end prices. It moves with the market as well as with buying and selling.

Filings for Q3 2026

straight from the SEC

Filed	Form	Quarter
Oct 30, 2026	13F-HR	Q3 2026	SEC filing ↗

Other superinvestors

All hedge fund holdings →

Foster Dykema Cabot & Partners 13F FAQ

What does Foster Dykema Cabot & Partners own?

Foster Dykema Cabot & Partners reported 352 stocks worth $1.9B in its 13F filing for Q3 2026, filed Oct 30, 2026. Its largest holdings are SPY (16.6%), JPST (12.7%) and ICSH (11.3%). The table above lists every position in the filing (the top 10 without an account).

What did Foster Dykema Cabot & Partners buy and sell in Q3 2026?

Compared with Q2 2026: 31 new positions, 51 added to, 29 trimmed and 3 sold out. New positions include VONE, VONV and XOM. It sold all of XOM and VGIT.

When will Foster Dykema Cabot & Partners file its next 13F?

Holdings as of Dec 31, 2026 are due by Feb 15, 2027. The filing appears on this page within minutes of reaching the SEC.

How much is Foster Dykema Cabot & Partners's portfolio worth?

The Q3 2026 filing reports $1.9B in US stocks. That leaves out cash, bonds, short positions and most foreign holdings, so the fund's total assets are usually larger.

For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Holdings come from the fund's SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. The fund may have changed its positions since. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.