Tarbox Family Office, Inc.

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

Portfolio value: $711M
Positions: 100
Quarter ended: September 30, 2026
Filed: October 23, 2026

Reported portfolio value by quarter (52 quarters reported)

$711M $108M

Q4 13 Q3 16 Q2 19 Q1 22 Q4 24 Q3 26

$120M in Q4 2013 → $711M 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	33.3%	Trimmed 0.3%	309,392	$237M
IT Ishares Tr	7.5%	Trimmed 1.3%	739,085	$53.2M
AC American Centy ETF Tr	6.6%	Trimmed 1.6%	498,533	$46.9M
JP J P Morgan Exchange Traded F	4.0%	Added 1.3%	630,169	$28.2M
IT Ishares Tr	3.9%	Trimmed 0.5%	284,458	$27.6M
AC American Centy ETF Tr	3.7%	Trimmed 0.3%	294,464	$26.5M
AC American Centy ETF Tr	3.7%	Trimmed 0.3%	222,284	$26.2M
IT Ishares Tr	3.3%	Trimmed 0.3%	85,560	$23.8M
AC American Centy ETF Tr	3.0%	Unchanged	395,590	$21.7M
AC American Centy ETF Tr	2.7%	Added 4.2%	250,195	$19.1M
VI Vanguard Index Fds	2.2%	Trimmed 0.1%	200,574	$15.7M
VI Vanguard Index Fds	1.9%	Unchanged	38,385	$13.5M
I Ishares Inc	1.8%	Trimmed 3.1%	159,724	$13M
VI Vanguard Intl Equity Index F	1.7%	Trimmed 0.3%	206,443	$12.2M
VC Vanguard Calif Tax Free Fds	1.6%	New	122,331	$11.5M
Abbvie Inc	1.6%	Unchanged	43,624	$11.4M
VT Vanguard Tax-managed Fds	1.5%	Trimmed 1.2%	155,346	$11M
IT Ishares Tr	1.5%	Trimmed 0.1%	78,075	$10.6M
Apple Inc	1.1%	Added 2.8%	23,477	$7.82M
Broadcom Inc	1.1%	Unchanged	21,494	$7.55M
Abbott Laboratories	0.7%	Unchanged	51,501	$5.09M
IT Ishares Tr	0.7%	Trimmed 1.9%	46,378	$4.82M
Deere & Co	0.6%	Unchanged	6,468	$4.34M
VM Vanguard Mun Bd Fds	0.6%	New	43,693	$4.17M
BH Berkshire Hathaway Inc Del	0.5%	Unchanged	5	$3.74M
Microsoft Corp	0.5%	Added 3.9%	6,271	$3.22M
UB Us Bancorp	0.4%	Unchanged	48,913	$2.83M
Amazon Com Inc	0.4%	Added 93%	11,254	$2.8M
IT Ishares Tr	0.4%	Unchanged	20,298	$2.54M
DE Dimensional ETF Trust	0.3%	Unchanged	41,863	$2.3M
Boeing Co	0.3%	Added 149%	12,039	$2.24M
PI Ppg Inds Inc	0.3%	Unchanged	21,212	$2.21M
Johnson & Johnson	0.3%	Unchanged	7,183	$1.9M
VI Vanguard Index Fds	0.2%	Unchanged	4,687	$1.75M
VI Vanguard Index Fds	0.2%	Unchanged	5,717	$1.63M
IT Ishares Tr	0.2%	Added 0.0%	27,449	$1.6M
VS Vanguard Specialized Funds	0.2%	Trimmed 4.1%	6,544	$1.53M
Caterpillar Inc	0.2%	Unchanged	1,783	$1.45M
IG Ishares Gold Tr	0.2%	Added 14%	17,148	$1.34M
IT Ishares Tr	0.2%	Trimmed 1.6%	5,831	$1.3M
IT Ishares Tr	0.2%	Unchanged	8,323	$1.18M
IT Ishares Tr	0.2%	Unchanged	4,788	$1.09M
Alphabet Inc	0.1%	Trimmed 0.0%	3,013	$1.04M
JP J P Morgan Exchange Traded F	0.1%	Trimmed 0.6%	20,563	$1.04M
IT Ishares Tr	0.1%	New	22,726	$1.03M
SG SPDR Gold Tr	0.1%	Added 28%	2,592	$987K
Alphabet Inc	0.1%	Added 180%	2,833	$965K
Exxonmobil Holdings Corp	0.1%	New	5,919	$963K
BH Berkshire Hathaway Inc Del	0.1%	Added 24%	1,869	$931K
VI Vanguard Index Fds	0.1%	Added 15%	1,211	$849K
Pfizer Inc	0.1%	Unchanged	27,390	$781K
IT Ishares Tr	0.1%	Unchanged	4,656	$774K
IT Ishares Tr	0.1%	Trimmed 57%	18,368	$764K
Mastercard Incorporated	0.1%	Unchanged	1,382	$762K
Coca Cola Co	0.1%	Unchanged	8,439	$726K
Costco Wholesale Corporation	0.1%	Added 6.9%	771	$702K
SA Southwest Airls Co	0.1%	Trimmed 2.1%	15,773	$657K
SS SPDR Series Trust	0.1%	Added 7.1%	7,304	$656K
EL Eli Lilly & Co	0.1%	Unchanged	553	$640K
IT Ishares Tr	0.1%	Unchanged	3,793	$633K

Showing top 60 of 100 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 23, 2026

Company	Action	Shares changed	Value of change	% of portfolio
VC Vanguard Calif Tax Free Fds	New	+122,331	+$11.5M	1.6%
VM Vanguard Mun Bd Fds	New	+43,693	+$4.17M	0.6%
Amazon Com Inc	Added	+5,418	+$1.35M	0.4%
Boeing Co	Added	+7,213	+$1.34M	0.3%
IT Ishares Tr	New	+22,726	+$1.03M	0.1%
IT Ishares Tr	Trimmed	−23,952	−$996K	0.1%
Exxonmobil Holdings Corp	New	+5,919	+$963K	0.1%
Exxon Mobil Corp	Exited	−5,919	−$809K	—
AC American Centy ETF Tr	Trimmed	−8,213	−$772K	6.6%
AC American Centy ETF Tr	Added	+10,128	+$772K	2.7%

Showing the 10 largest of 54 changes.

Q2 2026

quarter ended June 30, 2026 · filed August 03, 2026

Company	Action	Shares changed	Value of change	% of portfolio
VI Vanguard Index Fds	Added	+150,451	+$12.1M	2.3%
Broadcom Inc	New	+21,494	+$8.12M	1.2%
IT Ishares Tr	Trimmed	−83,417	−$6.43M	8.3%
AC American Centy ETF Tr	Added	+79,406	+$6.37M	2.8%
IT Ishares Tr	Trimmed	−3,317	−$2.48M	33.3%
IT Ishares Tr	Added	+15,223	+$1.89M	0.4%
JP J P Morgan Exchange Traded F	Added	+24,217	+$1.14M	4.2%
AC American Centy ETF Tr	Trimmed	−10,104	−$975K	7.0%
IB Ishares Bitcoin Trust ETF	Exited	−23,647	−$909K	—
IT Ishares Tr	Added	+12,242	+$695K	0.2%

Showing the 10 largest of 49 changes.

Q1 2026

quarter ended March 31, 2026 · filed April 24, 2026

Company	Action	Shares changed	Value of change	% of portfolio
AC American Centy ETF Tr	New	+397,466	+$18.7M	3.0%
AC American Centy ETF Tr	New	+160,661	+$11.6M	1.9%
IT Ishares Tr	Trimmed	−167,495	−$11.3M	9.1%
Nvidia Corporation	Exited	−9,502	−$1.77M	—
Apple Inc	Trimmed	−5,960	−$1.51M	0.9%
IT Ishares Tr	Trimmed	−2,065	−$1.35M	33.3%
Microsoft Corp	Trimmed	−2,600	−$962K	0.4%
VI Vanguard Index Fds	Trimmed	−2,927	−$841K	2.3%
IT Ishares Tr	Trimmed	−2,916	−$723K	3.5%
Alphabet Inc	Trimmed	−2,170	−$624K	0.1%

Showing the 10 largest of 87 changes.

Q4 2025

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

Company	Action	Shares changed	Value of change	% of portfolio
IT Ishares Tr	Trimmed	−35,066	−$24M	34.8%
I Ishares Inc	Trimmed	−97,892	−$6.58M	1.9%
IT Ishares Tr	Trimmed	−69,014	−$6.17M	4.3%
IT Ishares Tr	Trimmed	−84,105	−$5.55M	10.6%
VI Vanguard Index Fds	Trimmed	−16,516	−$5.2M	1.9%
VI Vanguard Index Fds	Trimmed	−15,263	−$5.12M	0.3%
IT Ishares Tr	Trimmed	−30,544	−$3.67M	1.5%
VI Vanguard Index Fds	Trimmed	−10,354	−$3M	2.5%
IT Ishares Tr	Trimmed	−10,558	−$2.6M	3.6%
JP J P Morgan Exchange Traded F	Added	+25,771	+$1.22M	4.6%

Showing the 10 largest of 101 changes.

Q3 2025

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

Company	Action	Shares changed	Value of change	% of portfolio
IT Ishares Tr	Trimmed	−25,677	−$17.2M	34.5%
IT Ishares Tr	Trimmed	−58,293	−$3.8M	10.4%
IT Ishares Tr	Trimmed	−10,895	−$2.64M	3.6%
VI Vanguard Intl Equity Index F	Trimmed	−47,986	−$2.6M	1.9%
IT Ishares Tr	Trimmed	−27,412	−$2.56M	0.7%
IT Ishares Tr	Trimmed	−11,224	−$2.18M	0.2%
JP J P Morgan Exchange Traded F	Added	+34,152	+$1.62M	4.1%
AC American Centy ETF Tr	Trimmed	−12,138	−$912K	5.7%
IT Ishares Tr	Trimmed	−6,867	−$600K	4.7%
AC American Centy ETF Tr	Trimmed	−6,268	−$495K	3.4%

Showing the 10 largest of 64 changes.

Q2 2025

quarter ended June 30, 2025 · filed August 12, 2025

Company	Action	Shares changed	Value of change	% of portfolio
JP J P Morgan Exchange Traded F	Added	+138,617	+$6.52M	3.9%
IT Ishares Tr	Added	+5,134	+$3.19M	35.2%
IT Ishares Tr	Added	+24,229	+$1.5M	10.7%
IT Ishares Tr	Added	+11,580	+$1.27M	1.8%
VI Vanguard Index Fds	Trimmed	−4,221	−$1.2M	2.4%
IB Ishares Bitcoin Trust ETF	Added	+14,823	+$907K	0.3%
IT Ishares Tr	Exited	−4,281	−$417K	—
VI Vanguard Index Fds	New	+912	+$400K	0.1%
IT Ishares Tr	Added	+2,900	+$392K	0.2%
IT Ishares Tr	Trimmed	−4,659	−$389K	4.7%

Showing the 10 largest of 81 changes.

Q1 2025

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

Company	Action	Shares changed	Value of change	% of portfolio
JP J P Morgan Exchange Traded F	Added	+199,731	+$9.4M	3.2%
BH Berkshire Hathaway Inc Del	New	+5	+$3.99M	0.7%
IT Ishares Tr	Trimmed	−4,863	−$2.73M	34.7%
VI Vanguard Index Fds	Added	+9,918	+$2.55M	2.5%
VI Vanguard Index Fds	Added	+3,178	+$822K	2.8%
AC American Centy ETF Tr	Trimmed	−8,501	−$741K	3.0%
IB Ishares Bitcoin Trust ETF	New	+14,994	+$702K	0.1%
IT Ishares Tr	Trimmed	−10,277	−$600K	10.8%
VT Vanguard Tax-managed Fds	Trimmed	−11,395	−$579K	1.4%
AC American Centy ETF Tr	Trimmed	−9,268	−$558K	5.4%

Showing the 10 largest of 78 changes.

Q4 2024

quarter ended December 31, 2024 · filed January 17, 2025

Company	Action	Shares changed	Value of change	% of portfolio
JP J P Morgan Exchange Traded F	Added	+125,039	+$5.76M	1.6%
IT Ishares Tr	Trimmed	−2,938	−$1.73M	36.5%
AC American Centy ETF Tr	Added	+10,250	+$629K	3.2%
IT Ishares Tr	Trimmed	−4,774	−$614K	0.2%
JP J P Morgan Exchange Traded F	Trimmed	−7,274	−$366K	0.3%
AC American Centy ETF Tr	Added	+6,036	+$355K	5.3%
IT Ishares Tr	Exited	−4,475	−$325K	—
VI Vanguard Index Fds	Trimmed	−893	−$241K	2.2%
Unitedhealth Group Inc	Exited	−375	−$219K	—
Blackrock Inc	New	+211	+$216K	—

Showing the 10 largest of 80 changes.

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