Q3 2026 13F · SEC CIK 1039128

Harbor Capital Advisors, Inc.

Mutual fund managerFiled 2026-10-22 for Q3 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $1.5B
Reported positions: 1,443
Top holdings a year, 3 yrs: +19.4%
Assets under management: $67.6B

Harbor Capital Advisors, Inc. is a mutual fund manager that reported 1,443 positions worth $1.5B in its Q3 2026 13F, filed 2026-10-22. Its largest holdings were Ishares Inc (IEMG, 2.3%), Spdr Series Trust (SPLG, 2.1%), Microsoft Corp (MSFT, 2.1%). A portfolio copying its top holdings returned 19.4% a year over the last 3 years, against 20.4% for the S&P 500.

Harbor Capital Advisors, Inc. holdings largest 50 of 1,443 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.

Harbor Capital Advisors, Inc. 13F holdings
Stock	% of 13F value	Q2 2026	Shares	Share change	Reported value
IEMGIshares Inc	2.3%	2.5%	418,898	-4.2%	$34.0M
SPLGSpdr Series Trust	2.1%	1.9%	339,104	+8.7%	$30.4M
MSFTMicrosoft Corp	2.1%	1.4%	59,229	+6.7%	$30.4M
AMZNAmazon Com Inc	2.0%	1.8%	120,101	+7.2%	$29.9M
NVDANvidia Corporation	2.0%	1.7%	128,233	+4.9%	$29.3M
AAPLApple Inc	2.0%	1.7%	87,932	+0.4%	$29.3M
GOOGLAlphabet Inc	1.9%	1.8%	79,993	+8.5%	$27.5M
METAMeta Platforms Inc	1.8%	1.3%	35,725	+2.6%	$25.9M
FLJPFranklin Templeton ETF Tr	1.0%	0.9%	361,653	+12.4%	$15.0M
JPMJpmorgan Chase & Co	1.0%	1.0%	45,158	+0.4%	$14.9M
CSCOCisco Sys Inc	1.0%	1.1%	138,717	+0.3%	$14.9M
QQQMInvesco Exch Traded Fd Tr II	1.0%	0.8%	48,959	+30.0%	$14.9M
IEFAIshares Tr	1.0%	1.0%	149,461	+2.3%	$14.5M
XLKSelect Sector Spdr Tr	0.9%	0.6%	64,573	+38.4%	$12.6M
LLYEli Lilly & Co	0.8%	0.8%	10,315	+0.4%	$11.9M
SIMOSilicon Motion Technology Co	0.8%	1.0%	42,436	-1.3%	$11.9M
NFLXNetflix Inc.	0.7%	0.8%	154,878	+0.4%	$10.8M
SMMDIshares Tr	0.7%	0.9%	125,765	-16.7%	$10.8M
CVXChevron Corporation	0.7%	0.6%	52,643	+6.1%	$10.8M
CRMSalesforce Inc	0.6%	0.4%	37,851	+6.9%	$8.7M
KLACKla Corp	0.6%	0.9%	44,221	+0.4%	$8.6M
MRVLMarvell Technology Inc	0.6%	0.6%	32,509	+10.1%	$8.6M
LAURLaureate Ed Inc	0.5%	0.5%	202,350	+6.2%	$7.7M
AVTAvnet Inc	0.5%	0.5%	77,124	-6.1%	$7.7M
KBWBInvesco Exch Traded Fd Tr II	0.5%	—	86,778	—	$7.6M
MAMastercard Incorporated	0.5%	0.5%	13,600	+0.6%	$7.5M
FIBKFirst Intst Bancsystem Inc	0.5%	0.5%	207,303	+4.1%	$7.4M
JNJJohnson & Johnson	0.5%	0.5%	27,920	-0.9%	$7.4M
ANETArista Networks Inc	0.5%	0.4%	35,737	+1.1%	$7.3M
COSTCostco Wholesale Corporation	0.5%	0.5%	7,949	+0.1%	$7.2M
LRCXLam Research Corp	0.5%	0.6%	21,725	+1.5%	$7.1M
VGKVanguard Ftse Europe ETF	0.5%	0.5%	81,795	-1.4%	$7.1M
RDNTRadnet Inc	0.5%	0.5%	100,843	-13.4%	$7.0M
XLCSelect Sector Spdr Tr	0.5%	0.5%	61,941	-6.2%	$6.9M
PGProcter & Gamble Co	0.5%	0.5%	46,318	+0.3%	$6.7M
SNEXStonex Group Inc	0.4%	0.5%	101,026	+56.3%	$6.5M
PAYCPaycom Software Inc	0.4%	—	29,430	—	$6.4M
LOPEGrand Canyon Ed Inc	0.4%	—	41,644	—	$6.3M
MODModine Manufacturing Co	0.4%	0.5%	32,774	+12.1%	$6.1M
WKWorkiva Inc	0.4%	—	90,500	—	$6.0M
PMPhilip Morris Intl Inc	0.4%	0.4%	31,000	+0.4%	$5.9M
BACBank of Amer Corp	0.4%	0.4%	107,590	-0.2%	$5.9M
YETIYeti Hldgs Inc	0.4%	—	141,612	—	$5.8M
TWSTTwist Bioscience Corp	0.4%	—	29,925	—	$5.8M
DORMDorman Prods Inc	0.4%	0.4%	45,938	+13.3%	$5.6M
CATCaterpillar Inc	0.4%	0.5%	6,804	+0.5%	$5.5M
FROGJfrog Ltd	0.4%	0.4%	56,431	-15.7%	$5.5M
GEGe Aerospace	0.4%	0.4%	17,519	+0.4%	$5.5M
ABBVAbbvie Inc	0.4%	—	20,845	—	$5.5M
MGNIMagnite Inc	0.4%	0.4%	213,055	-31.8%	$5.4M

What Harbor Capital Advisors, Inc. bought and sold in Q3 2026, against Q2 2026.

New positions

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

Added to

SNEX Stonex Group Inc+56.3% shares
XLK Select Sector Spdr Tr+38.4% shares
QQQM Invesco Exch Traded Fd Tr II+30.0% shares
DORM Dorman Prods Inc+13.3% shares
FLJP Franklin Templeton ETF Tr+12.4% shares
MOD Modine Manufacturing Co+12.1% shares
MRVL Marvell Technology Inc+10.1% shares
SPLG Spdr Series Trust+8.7% shares

Reduced

MGNI Magnite Inc-31.8% shares
SMMD Ishares Tr-16.7% shares
FROG Jfrog Ltd-15.7% shares
RDNT Radnet Inc-13.4% shares
XLC Select Sector Spdr Tr-6.2% shares
AVT Avnet Inc-6.1% shares

Left the top 50

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: +12.7% /yr; S&P 500 +20.1%
3 years: +19.4% /yr; S&P 500 +20.4%
5 years: +9.9% /yr; S&P 500 +13.0%

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	$1.5B	1,443
Q2 2026	$1.5B	1,212
Q1 2026	$1.2B	1,211
Q4 2025	$1.3B	1,320
Q3 2025	$1.3B	1,336
Q2 2025	$2.4B	1,380
Q1 2025	$2.2B	1,400
Q4 2024	$2.3B	1,318
Q3 2024	$2.3B	1,339
Q2 2024	$1.3B	724
Q1 2024	$765.3M	744
Q4 2023	$520.2M	438

Questions about Harbor Capital Advisors, Inc.'s portfolio

What stocks does Harbor Capital Advisors, Inc. own?

Harbor Capital Advisors, Inc.'s latest 13F, for Q3 2026 and filed Oct 22, 2026, lists 1,443 positions worth $1.5B. The largest are Ishares Inc (IEMG) at 2.3%, Spdr Series Trust (SPLG) at 2.1%, Microsoft Corp (MSFT) at 2.1%, Amazon Com Inc (AMZN) at 2.0% and Nvidia Corporation (NVDA) at 2.0%.

What did Harbor Capital Advisors, Inc. buy last quarter?

In Q3 2026, Harbor Capital Advisors, Inc. added Stonex Group Inc (SNEX) (+56.3% shares), Select Sector Spdr Tr (XLK) (+38.4% shares) and Invesco Exch Traded Fd Tr II (QQQM) (+30.0% shares), compared with its Q2 2026 filing.

What did Harbor Capital Advisors, Inc. sell last quarter?

In Q3 2026, Harbor Capital Advisors, Inc. cut from its top 50 Ishares Tr (USIG), cut from its top 50 Select Sector Spdr Tr (XLP), cut from its top 50 Digital Turbine Inc (APPS), cut from its top 50 Arcosa Inc (ACA), cut from its top 50 Porch Group Inc (PRCH), Magnite Inc (MGNI) (-31.8% shares), Ishares Tr (SMMD) (-16.7% shares) and Jfrog Ltd (FROG) (-15.7% shares), compared with its Q2 2026 filing.

How has Harbor Capital Advisors, Inc.'s portfolio performed?

A portfolio copying Harbor Capital Advisors, Inc.'s 20 largest 13F holdings each quarter, from the day each filing was public, returned +19.4% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +12.7% against +20.1%. Over 5 years: +9.9% a year against +13.0%.

When is Harbor Capital Advisors, Inc.'s next 13F filing due?

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

How much money does Harbor Capital Advisors, Inc. manage?

Harbor Capital Advisors, Inc. reported $67.6B of regulatory assets under management on its latest SEC Form ADV. Its 13F, which covers only US-listed stocks and options, totals $1.5B.