Q2 2026 13F · SEC CIK 1767945

Ostrum Asset Management

Asset managerFiled 2026-08-13 for Q2 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $2.1B
Reported positions: 549
Top holdings a year, 3 yrs: +24.3%
Average holding period: 3.3 yrs

Ostrum Asset Management is an asset manager that reported 549 positions worth $2.1B in its Q2 2026 13F, filed 2026-08-13. Its largest holdings were Applied Matls Inc (AMAT, 6.4%), Nvidia Corporation Com (NVDA, 6.3%), Alphabet Inc (GOOGL, 4.4%). A portfolio copying its top holdings returned 24.3% a year over the last 3 years, against 20.4% for the S&P 500.

Ostrum Asset Management holdings largest 50 of 549 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.

Ostrum Asset Management 13F holdings
Stock	% of 13F value	Q1 2026	Shares	Share change	Reported value
AMATApplied Matls Inc	6.4%	4.1%	183,314	-13.7%	$132.5M
NVDANvidia Corporation Com	6.3%	6.3%	648,296	+0.3%	$129.7M
GOOGLAlphabet Inc	4.4%	4.1%	253,688	-1.1%	$90.7M
LLYLilly Eli & Co	4.2%	3.8%	72,402	-2.3%	$86.8M
AAPLApple Inc	4.2%	4.1%	298,092	+3.3%	$86.3M
AMZNAmazon Com Inc Com	3.1%	3.1%	268,144	+1.2%	$63.9M
CMICummins Inc	2.4%	2.1%	69,463	-0.9%	$49.5M
GEGe Aerospace	2.2%	2.1%	120,951	-7.2%	$45.2M
ETNEaton Corp PLC	2.1%	2.0%	100,903	+2.2%	$43.0M
JPMJpmorgan Chase & Co	2.0%	2.1%	126,799	+0.3%	$41.5M
VVisa Inc Com Cl A	2.0%	2.0%	120,532	+0.0%	$41.4M
URIUnited Rentals Inc Com	1.9%	1.4%	34,152	-2.9%	$38.7M
MPWRMonolithic Power Systms Inc	1.9%	1.3%	27,940	+34.6%	$38.6M
NUENucor Corp	1.8%	1.6%	168,438	-0.0%	$37.5M
SCHWSchwab Charles Corp	1.7%	1.9%	372,338	+4.4%	$34.4M
EXCExelon Corp	1.5%	0.3%	676,350	+461.5%	$31.5M
PHParker-Hannifin Corp	1.5%	—	32,130	—	$31.4M
VMCVulcan Matls Co Com	1.5%	1.6%	103,861	+1.6%	$30.6M
MSFTMicrosoft Corp	1.5%	1.6%	81,393	+5.5%	$30.4M
ROSTRoss Stores Inc.	1.4%	1.6%	139,634	+3.3%	$29.7M
ILMNIllumina Inc	1.4%	1.6%	168,555	-26.8%	$29.6M
SNPSSynopsys Inc	1.4%	1.5%	63,790	-3.7%	$28.5M
METAMeta Platforms Inc Class A	1.3%	1.5%	49,120	+2.8%	$27.7M
BRK-BBerkshire Hathaway Inc Del	1.3%	1.5%	55,291	-1.8%	$27.7M
SHOPShopify Inc	1.2%	1.7%	215,685	-15.6%	$24.6M
QQnity Electronics Inc	1.2%	—	147,291	—	$24.1M
AVGOBroadcom Inc	0.8%	0.7%	43,075	+3.2%	$16.3M
GOOGAlphabet Inc	0.7%	0.7%	43,660	-3.2%	$15.4M
JNJJohnson & Johnson	0.7%	0.8%	55,737	+0.9%	$14.2M
TSLATesla Inc Com	0.5%	0.3%	25,078	+55.8%	$10.5M
CSCOCisco Sys Inc	0.5%	0.4%	89,747	-4.5%	$10.5M
CCEPCoca-Cola Europacific Partne	0.5%	0.5%	98,839	+5.6%	$9.9M
AMDAdvanced Micro Devices Inc	0.5%	—	16,826	—	$9.8M
MUMicron Technology Inc	0.5%	—	8,308	—	$9.6M
KOCoca Cola Co	0.4%	0.5%	114,646	+3.6%	$9.3M
MCDMcdonalds Corp Com	0.4%	0.5%	33,334	+7.1%	$9.0M
KOSKosmos Energy Ltd	0.4%	0.6%	4,008,525	+0.0%	$8.5M
WMWaste Mgmt Inc Del	0.4%	0.4%	35,393	+5.1%	$7.9M
PANWPalo Alto Networks Inc	0.4%	—	22,527	—	$7.7M
ABBVAbbvie Inc	0.4%	0.4%	30,320	+1.1%	$7.6M
AMEAmetek Inc	0.3%	0.3%	29,310	+5.0%	$7.1M
LRCXLam Research Corp	0.3%	—	15,698	—	$6.8M
PGProcter & Gamble Co Com	0.3%	0.4%	45,382	-9.5%	$6.7M
CORCencora Inc Com	0.3%	0.3%	22,893	+18.1%	$6.5M
HUBBHubbell Inc	0.3%	0.3%	12,355	+13.0%	$6.5M
MAMastercard Inc.	0.3%	—	12,236	—	$6.3M
KLACKla Corp	0.3%	—	19,775	—	$6.0M
GISGeneral Mills Inc	0.3%	0.3%	167,749	+24.1%	$5.8M
MDLZMondelez International Inc.	0.3%	0.3%	99,455	+4.7%	$5.8M
MCKMckesson Corp Com	0.3%	0.3%	7,577	+10.5%	$5.7M

What Ostrum Asset Management bought and sold in Q2 2026, against Q1 2026.

New positions

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

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: +22.1% /yr; S&P 500 +20.1%
3 years: +24.3% /yr; S&P 500 +20.4%
5 years: —

A portfolio of the filer's 20 largest 13F positions, weighted by value and rebuilt each quarter on the day the filing became public. 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	$2.1B	549
Q1 2026	$1.8B	562
Q4 2025	$2.1B	572
Q3 2025	$2.2B	570
Q2 2025	$2.1B	571
Q1 2025	$1.9B	642
Q4 2024	$1.2B	627
Q3 2024	$1.2B	635
Q2 2024	$1.1B	644
Q1 2024	$1.3B	654
Q4 2023	$1.2B	659
Q3 2023	$1.1B	680

Questions about Ostrum Asset Management's portfolio

What stocks does Ostrum Asset Management own?

Ostrum Asset Management's latest 13F, for Q2 2026 and filed Aug 13, 2026, lists 549 positions worth $2.1B. The largest are Applied Matls Inc (AMAT) at 6.4%, Nvidia Corporation Com (NVDA) at 6.3%, Alphabet Inc (GOOGL) at 4.4%, Lilly Eli & Co (LLY) at 4.2% and Apple Inc (AAPL) at 4.2%.

What did Ostrum Asset Management buy last quarter?

In Q2 2026, Ostrum Asset Management added Exelon Corp (EXC) (+461.5% shares), Tesla Inc Com (TSLA) (+55.8% shares) and Monolithic Power Systms Inc (MPWR) (+34.6% shares), compared with its Q1 2026 filing.

What did Ostrum Asset Management sell last quarter?

In Q2 2026, Ostrum Asset Management cut from its top 50 Honeywell Intl Inc (HON), cut from its top 50 Lincoln Electric Holdings Inc (LECO), cut from its top 50 Ishares Tr (INDA), cut from its top 50 Intercontinental Exchange in (ICE), cut from its top 50 Cboe Global Mkts Inc (CBOE), Illumina Inc (ILMN) (-26.8% shares), Shopify Inc (SHOP) (-15.6% shares) and Applied Matls Inc (AMAT) (-13.7% shares), compared with its Q1 2026 filing.

How has Ostrum Asset Management's portfolio performed?

A portfolio copying Ostrum Asset Management's 20 largest 13F holdings each quarter, from the day each filing was public, returned +24.3% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +22.1% against +20.1%.

When is Ostrum Asset Management's next 13F filing due?

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