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Latest OSTRUM ASSET MANAGEMENT Stock Portfolio

$1.78Billion– No. of Holdings #562

OSTRUM ASSET MANAGEMENT Performance:
2026 Q1: -2.74%YTD: -2.74%2025: 14.18%
Performance for 2026 Q1 is -2.74%, and YTD is -2.74%, and 2025 is 14.18%.

About OSTRUM ASSET MANAGEMENT and 13F Hedge Fund Stock Holdings

OSTRUM ASSET MANAGEMENT is a hedge fund based in Boston, MA. On 2026-05-14, the fund reported it's updated stock portfolio. In the 13F Holdings report, OSTRUM ASSET MANAGEMENT reported an equity portfolio of $1.8 Billions as of 31 Mar, 2026.

The top stock holdings of OSTRUM ASSET MANAGEMENT are NVDA, GOOG, AAPL. The fund has invested 6.3% of it's portfolio in NVIDIA CORPORATION and 4.1% of portfolio in ALPHABET INC.

The fund managers got completely rid off TOPBUILD CORP (BLD), EQUITY LIFESTYLE PPTYS INC C (ELS) and AMCOR PLC (AMCR) stocks. They significantly reduced their stock positions in XYLEM INC (XYL), SERVICENOW INC (NOW) and CAPITAL ONE FINL CORP (COF). OSTRUM ASSET MANAGEMENT opened new stock positions in SHOPIFY INC (SHOP), NEBIUS GROUP N.V. (YNDX) and AMCOR PLC (AMCR). The fund showed a lot of confidence in some stocks as they added substantially to ILLUMINA INC (ILMN), FOX CORP (FOX) and HONEYWELL INTL INC (HON).
OSTRUM ASSET MANAGEMENT Equity Portfolio Value
Last Reported on: 14 May, 2026

OSTRUM ASSET MANAGEMENT Annual Return Estimates Vs S&P 500

Our best estimate is that OSTRUM ASSET MANAGEMENT made a return of -2.74% in the last quarter. In trailing 12 months, it's portfolio return was 12.61%.
  • Performance
  • S&P 500

New Buys

Ticker$ Bought
shopify inc30,328,800
nebius group n.v.1,444,960
amcor plc1,363,980
gap inc992,200
sanmina corp902,294
argan inc855,101
hudbay minerals inc664,098
New stocks bought by OSTRUM ASSET MANAGEMENT

Additions

Ticker% Inc.
illumina inc16,254
fox corp3,572
honeywell intl inc2,930
ross stores inc2,257
cummins inc1,909
microchip technology inc.1,904
lincoln elec hldgs inc1,564
snap inc1,520
Additions to existing portfolio by OSTRUM ASSET MANAGEMENT

Reductions

Ticker% Reduced
xylem inc-98.05
servicenow inc-95.34
capital one finl corp-95.12
oreilly automotive inc-90.92
keysight technologies inc-90.9
disney walt co-89.44
regions financial corp new-88.21
aflac inc-87.84
OSTRUM ASSET MANAGEMENT reduced stake in above stock

Sold off

None of the stocks were completely sold off by OSTRUM ASSET MANAGEMENT

Sector Distribution

OSTRUM ASSET MANAGEMENT has about 25.3% of it's holdings in Technology sector.

  • Technology
  • Industrials
  • Financial Services
  • Healthcare
  • Consumer Cyclical
  • Communication Services
  • Others
  • Basic Materials
  • Consumer Defensive
  • Utilities
  • Energy
  • Real Estate
Sector%
Technology25.3
Industrials15.7
Financial Services11.7
Healthcare10.4
Consumer Cyclical8.7
Communication Services8
Others5.8
Basic Materials4
Consumer Defensive3.4
Utilities2.7
Energy2.3
Real Estate2.1

Market Cap. Distribution

OSTRUM ASSET MANAGEMENT has about 91.8% of it's portfolio invested in the large-cap and mega-cap stocks.

  • LARGE-CAP
  • MEGA-CAP
  • UNALLOCATED
  • MID-CAP
Category%
LARGE-CAP47.6
MEGA-CAP44.2
UNALLOCATED5.6
MID-CAP1.9

Stocks belong to which Index?

About 87.9% of the stocks held by OSTRUM ASSET MANAGEMENT either belong to S&P 500 or RUSSELL 2000 index.

  • S&P 500
  • Others
  • RUSSELL 2000
Index%
S&P 50085.3
Others12.1
RUSSELL 20002.6
Top 5 Winners (%)%
KOS
kosmos energy ltd
206.4 %
sandisk corp
152.7 %
LYB
lyondellbasell industries nv
84.9 %
CF
cf industries hold
67.1 %
DOW
dow hldgs inc
61.0 %
Top 5 Winners ($)$
AMAT
applied matls inc
17.1 M
KOS
kosmos energy ltd
7.5 M
MPWR
monolithic pwr sys inc
6.3 M
ETN
eaton corp plc
3.8 M
ROST
ross stores inc
2.6 M
Top 5 Losers (%)%
TEAM
atlassian corporation
-44.6 %
flutter entmt plc
-41.4 %
CSGP
costar group inc
-39.8 %
HUBS
hubspot inc
-39.0 %
ZS
zscaler inc
-37.5 %
Top 5 Losers ($)$
MSFT
microsoft corp
-15.8 M
LLY
eli lilly & co
-11.0 M
AMZN
amazon com inc
-7.4 M
NVDA
nvidia corporation
-7.4 M
GOOG
alphabet inc
-7.2 M

OSTRUM ASSET MANAGEMENT Holdings Map

This heatmap illustrates the top 50 positions within the fund's portfolio.

Current Stock Holdings of OSTRUM ASSET MANAGEMENT

OSTRUM ASSET MANAGEMENT has 562 stocks in it's portfolio. About 33.9% of the portfolio is in top 10 stocks. MSFT proved to be the most loss making stock for the portfolio. AMAT was the most profitable stock for OSTRUM ASSET MANAGEMENT last quarter.

Last Reported on: 14 May, 2026
TickerNamesorted ascending% PortfolioShares Held$ ValueType% ChangeOptions