Q2 2026 13F · SEC CIK 350894

Sei Investments Co

Broker-dealerFiled 2026-08-14 for Q2 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $113.3B
Reported positions: 3,272
Top holdings a year, 3 yrs: +20.9%
Average holding period: 8.1 yrs

Sei Investments Co is a broker-dealer that reported 3,272 positions worth $113.3B in its Q2 2026 13F, filed 2026-08-14. Its largest holdings were Nvidia Corporation (NVDA, 3.6%), Apple Inc (AAPL, 2.2%), Microsoft Corp (MSFT, 1.9%). A portfolio copying its top holdings returned 20.9% a year over the last 3 years, against 20.4% for the S&P 500.

Sei Investments Co holdings largest 50 of 3,272 positions.

Weights are shares of the filer's total reported 13F value, compared with Q1 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.

Sei Investments Co 13F holdings
Stock	% of 13F value	Q1 2026	Shares	Share change	Reported value
NVDANvidia Corporation	3.6%	3.5%	22,568,298	+4.1%	$4.1B
AAPLApple Inc	2.2%	2.6%	8,447,488	-24.9%	$2.4B
MSFTMicrosoft Corp	1.9%	2.4%	5,912,948	-15.5%	$2.2B
AMZNAmazon Com Inc	1.9%	2.0%	9,445,638	-10.0%	$2.1B
GOOGAlphabet Inc	1.8%	1.6%	5,713,866	-2.5%	$2.0B
VEAVanguard Ftse Developed Markets Index Fu	1.6%	1.5%	24,855,847	+0.5%	$1.8B
AVGOBroadcom Inc	1.5%	1.4%	4,462,157	-12.1%	$1.7B
SCHGSchwab Strategic Tr	1.4%	1.3%	47,660,218	+0.2%	$1.6B
SCHVSchwab Strategic Tr	1.4%	1.3%	45,024,906	+0.6%	$1.6B
BNDVanguard Bd Index Fds	1.3%	1.3%	20,078,691	+7.8%	$1.5B
GOOGLAlphabet Inc	1.3%	1.1%	3,971,630	-4.7%	$1.4B
IDEVIshares Tr	1.0%	1.0%	12,986,639	+4.4%	$1.2B
METAMeta Platforms Inc	0.9%	1.0%	1,809,469	-8.2%	$1.0B
TSMTaiwan Semiconductor Manufac	0.9%	0.8%	2,124,629	-18.0%	$1.0B
MUMicron Technology Inc	0.9%	—	859,005	—	$991.5M
SCHXSchwab Strategic Tr	0.8%	0.8%	32,299,151	-0.7%	$950.6M
VTVVanguard Index Fds	0.8%	0.7%	3,912,536	+1.9%	$852.7M
LLYEli Lilly & Co	0.7%	0.7%	689,850	-10.1%	$827.4M
VTEBVanguard Mun Bd Fds	0.7%	0.7%	15,843,041	+11.8%	$801.3M
VUGVanguard Index Fds	0.7%	0.6%	8,977,301	+509.9%	$773.3M
IEMGIshares Inc	0.7%	0.6%	9,230,057	+1.7%	$764.6M
AMDAdvanced Micro Devices Inc	0.7%	0.3%	1,280,571	-26.6%	$743.9M
NXUSNushares ETF Tr	0.6%	0.6%	28,874,659	+10.7%	$723.7M
SEIMSei Exchange Traded Funds	0.6%	0.6%	12,840,416	-4.7%	$721.0M
SEIVSei Exchange Traded Funds	0.6%	0.6%	14,601,161	-2.3%	$700.9M
VWOVanguard Intl Equity Index F	0.6%	0.6%	11,412,104	+1.0%	$681.2M
VVisa Inc	0.6%	0.5%	1,908,127	+3.3%	$654.7M
BNDXVanguard Charlotte Fds	0.6%	0.5%	13,123,557	+7.1%	$635.6M
WELLWelltower Inc	0.5%	0.5%	2,571,718	-3.3%	$583.7M
TSLATesla Inc	0.5%	0.5%	1,335,968	-10.9%	$561.9M
MUBIshares Tr	0.5%	0.5%	5,065,381	-4.0%	$545.1M
ASMLAsml Hldg NV	0.5%	0.3%	261,246	-9.0%	$519.7M
SCHASchwab Strategic Tr	0.4%	0.4%	13,908,960	-5.6%	$502.5M
MAMastercard Incorporated	0.4%	0.6%	969,206	-22.1%	$497.8M
SPHYSpdr Series Trust	0.4%	0.4%	21,167,136	+6.7%	$496.2M
GEGe Aerospace	0.4%	0.4%	1,194,348	-11.5%	$446.4M
SCHOSchwab Strategic Tr	0.4%	0.4%	17,389,099	+3.9%	$419.8M
GEVGe Vernova Inc	0.4%	0.4%	356,048	-18.3%	$418.3M
WWDWoodward, Inc.	0.4%	0.3%	981,425	+8.5%	$417.5M
LRCXLam Research Corp	0.4%	—	959,938	—	$416.0M
JNJJohnson & Johnson	0.4%	0.4%	1,608,573	-18.0%	$408.5M
JPMJpmorgan Chase & Co	0.3%	0.4%	1,174,779	-9.5%	$384.5M
VBRVanguard Index Fds	0.3%	0.3%	1,515,431	+1.9%	$368.2M
AMATApplied Matls Inc	0.3%	—	505,531	—	$365.5M
SCHPSchwab Strategic Tr	0.3%	0.3%	13,667,827	+5.5%	$362.2M
VBKVanguard Index Fds	0.3%	—	982,654	—	$359.4M
IEFAIshares Tr	0.3%	0.3%	3,612,061	+2.0%	$348.9M
SEIQSei Exchange Traded Funds	0.3%	—	8,644,643	—	$340.7M
CSCOCisco Sys Inc	0.3%	—	2,848,964	—	$334.6M
ACWVIshares Inc	0.3%	0.3%	2,745,969	+3.4%	$330.1M

What Sei Investments Co bought and sold in Q2 2026, against Q1 2026.

New positions

Q1 2026's filing was too long to tell new positions apart.

Added to

Reduced

AMD Advanced Micro Devices Inc-26.6% shares
AAPL Apple Inc-24.9% shares
MA Mastercard Incorporated-22.1% shares
GEV Ge Vernova Inc-18.3% shares
TSM Taiwan Semiconductor Manufac-18.0% shares
JNJ Johnson & Johnson-18.0% shares
MSFT Microsoft Corp-15.5% shares
AVGO Broadcom Inc-12.1% shares

Left the top 50

Share counts compared with the Q1 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: +12.6% /yr; S&P 500 +20.1%
3 years: +20.9% /yr; S&P 500 +20.4%
5 years: +9.9% /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
Q2 2026	$113.3B	3,272
Q1 2026	$108.4B	3,228
Q4 2025	$101.3B	3,118
Q3 2025	$93.0B	2,814
Q2 2025	$86.3B	2,783
Q1 2025	$77.7B	2,757
Q4 2024	$77.9B	2,721
Q3 2024	$77.0B	2,675
Q2 2024	$70.6B	2,652
Q1 2024	$68.2B	2,616
Q4 2023	$62.3B	2,605
Q3 2023	$55.7B	2,615

Questions about Sei Investments Co's portfolio

What stocks does Sei Investments Co own?

Sei Investments Co's latest 13F, for Q2 2026 and filed Aug 14, 2026, lists 3,272 positions worth $113.3B. The largest are Nvidia Corporation (NVDA) at 3.6%, Apple Inc (AAPL) at 2.2%, Microsoft Corp (MSFT) at 1.9%, Amazon Com Inc (AMZN) at 1.9% and Alphabet Inc (GOOG) at 1.8%.

What did Sei Investments Co buy last quarter?

In Q2 2026, Sei Investments Co added Vanguard Index Fds (VUG) (+509.9% shares), Vanguard Mun Bd Fds (VTEB) (+11.8% shares) and Nushares ETF Tr (NXUS) (+10.7% shares), compared with its Q1 2026 filing.

What did Sei Investments Co sell last quarter?

In Q2 2026, Sei Investments Co cut from its top 50 Netflix Inc. (NFLX), cut from its top 50 Spotify Technology SA (SPOT), cut from its top 50 Booking Holdings Inc (BKNG), cut from its top 50 Exxon Mobil Corp (XOM), cut from its top 50 Shopify Inc (SHOP), Advanced Micro Devices Inc (AMD) (-26.6% shares), Apple Inc (AAPL) (-24.9% shares) and Mastercard Incorporated (MA) (-22.1% shares), compared with its Q1 2026 filing.

How has Sei Investments Co's portfolio performed?

A portfolio copying Sei Investments Co's 20 largest 13F holdings each quarter, from the day each filing was public, returned +20.9% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +12.6% against +20.1%. Over 5 years: +9.9% a year against +11.6%.

When is Sei Investments Co's next 13F filing due?

13F filings are due 45 days after each quarter ends. Sei Investments Co's filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.