OSTRUM ASSET MANAGEMENT — 13F Holdings & Portfolio
CIK 1767945 · latest 13F-HR filed 2026-08-13
OSTRUM ASSET MANAGEMENT manages $2.08B in 13F-reported U.S. long-equity assets across 549 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are AMAT (6.39%), NVDA (6.25%), GOOGL (4.37%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 17 new positions and exited 30; 336 existing positions rose in reported value and 127 fell.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
Long-equity book
Distinct positions
Filed 2026-08-13
vs 2026-03-31
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Portfolio map
Q2 26Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.
Sector mix
% of 13F valueSectors from each company's SIC code; funds and ETFs grouped separately.
Biggest buys and sells
Q1 26 → Q2 26Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.
13F assets and positions
4 quartersTotal reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.
Top positions over time
reported valueThe eight largest current positions, valued at each quarter end.
Concentration
top 10 = 37.1%Cumulative share of the portfolio held in the largest N positions.
| Name | Title / Status | Ownership | Type |
|---|
Quarter-over-quarter changes
Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.
Top Adds (vs prior quarter)
- APPLIED MATLS INC$59.9M +82.5%
- PARKER-HANNIFIN CORP$29.6M +1653.5%
- EXELON CORP$25.6M +434.0%
- QNITY ELECTRONICS INC$23.8M +11625.4%
- ELI LILLY & CO$18.7M +27.4%
Top Trims
- INTERCONTINENTAL EXCHANGE IN-$20.6M -92.5%
- SHOPIFY INC-$5.7M -18.8%
- KOSMOS ENERGY LTD-$2.7M -24.1%
- CBOE GLOBAL MKTS INC-$2.2M -31.5%
- CME GROUP INC-$2.0M -32.9%
New Positions
- CARNIVAL CORP LTD$1.7M
- MOOG INC$1.5M
- REGAL REXNORD CORPORATION$1.3M
- ATI INC$1.2M
- GENERAC HLDGS INC$939.9K
Exited Positions
- HONEYWELL INTL INC$29.4M
- LINCOLN ELEC HLDGS INC$26.0M
- ISHARES TR$23.9M
- ESSENTIAL UTILS INC$2.3M
- HELIOS TECHNOLOGIES INC$1.2M
OSTRUM ASSET MANAGEMENT Holdings (2026-06-30)
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | APPLIED MATLS INC | AMAT | 038222105 | $132.5M | 6.39% | 183,314 | SH |
| 2 | NVIDIA CORPORATION | NVDA | 67066G104 | $129.7M | 6.25% | 648,296 | SH |
| 3 | ALPHABET INC | GOOGL | 02079K305 | $90.7M | 4.37% | 253,688 | SH |
| 4 | ELI LILLY & CO | LLY | 532457108 | $86.8M | 4.18% | 72,402 | SH |
| 5 | APPLE INC | AAPL | 037833100 | $86.3M | 4.16% | 298,092 | SH |
| 6 | AMAZON COM INC | AMZN | 023135106 | $63.9M | 3.08% | 268,144 | SH |
| 7 | CUMMINS INC | CMI | 231021106 | $49.5M | 2.39% | 69,463 | SH |
| 8 | GE AEROSPACE | GE | 369604301 | $45.2M | 2.18% | 120,951 | SH |
| 9 | EATON CORP PLC | ETN | G29183103 | $43.0M | 2.07% | 100,903 | SH |
| 10 | JPMORGAN CHASE & CO | JPM | 46625H100 | $41.5M | 2.00% | 126,799 | SH |
| 11 | VISA INC | V | 92826C839 | $41.4M | 1.99% | 120,532 | SH |
| 12 | UNITED RENTALS INC | URI | 911363109 | $38.7M | 1.86% | 34,152 | SH |
| 13 | MONOLITHIC PWR SYS INC | MPWR | 609839105 | $38.6M | 1.86% | 27,940 | SH |
| 14 | NUCOR CORP | NUE | 670346105 | $37.5M | 1.81% | 168,438 | SH |
| 15 | SCHWAB CHARLES CORP | SCHW | 808513105 | $34.4M | 1.66% | 372,338 | SH |
| 16 | EXELON CORP | EXC | 30161N101 | $31.5M | 1.52% | 676,350 | SH |
| 17 | PARKER-HANNIFIN CORP | PH | 701094104 | $31.4M | 1.51% | 32,130 | SH |
| 18 | VULCAN MATLS CO | VMC | 929160109 | $30.6M | 1.48% | 103,861 | SH |
| 19 | MICROSOFT CORP | MSFT | 594918104 | $30.4M | 1.46% | 81,393 | SH |
| 20 | ROSS STORES INC | ROST | 778296103 | $29.7M | 1.43% | 139,634 | SH |
| 21 | ILLUMINA INC | ILMN | 452327109 | $29.6M | 1.43% | 168,555 | SH |
| 22 | SYNOPSYS INC | SNPS | 871607107 | $28.5M | 1.37% | 63,790 | SH |
| 23 | META PLATFORMS INC | META | 30303M102 | $27.7M | 1.33% | 49,120 | SH |
| 24 | BERKSHIRE HATHAWAY INC DEL | BRK.B | 084670702 | $27.7M | 1.33% | 55,291 | SH |
| 25 | SHOPIFY INC | SHOP | 82509L107 | $24.6M | 1.19% | 215,685 | SH |
| 26 | QNITY ELECTRONICS INC | Q | 74743L100 | $24.1M | 1.16% | 147,291 | SH |
| 27 | BROADCOM INC | AVGO | 11135F101 | $16.3M | 0.78% | 43,075 | SH |
| 28 | ALPHABET INC | GOOG | 02079K107 | $15.4M | 0.74% | 43,660 | SH |
| 29 | JOHNSON & JOHNSON | JNJ | 478160104 | $14.2M | 0.68% | 55,737 | SH |
| 30 | TESLA INC | TSLA | 88160R101 | $10.5M | 0.51% | 25,078 | SH |
| 31 | CISCO SYS INC | CSCO | 17275R102 | $10.5M | 0.51% | 89,747 | SH |
| 32 | COCA-COLA EUROPACIFIC PARTNE | CCEP | G25839104 | $9.9M | 0.48% | 98,839 | SH |
| 33 | ADVANCED MICRO DEVICES INC | AMD | 007903107 | $9.8M | 0.47% | 16,826 | SH |
| 34 | MICRON TECHNOLOGY INC | MU | 595112103 | $9.6M | 0.46% | 8,308 | SH |
| 35 | COCA COLA CO | KO | 191216100 | $9.3M | 0.45% | 114,646 | SH |
| 36 | MCDONALDS CORP | MCD | 580135101 | $9.0M | 0.43% | 33,334 | SH |
| 37 | KOSMOS ENERGY LTD | KOS | 500688106 | $8.5M | 0.41% | 4,008,525 | SH |
| 38 | WASTE MGMT INC DEL | WM | 94106L109 | $7.9M | 0.38% | 35,393 | SH |
| 39 | PALO ALTO NETWORKS INC | PANW | 697435105 | $7.7M | 0.37% | 22,527 | SH |
| 40 | ABBVIE INC | ABBV | 00287Y109 | $7.6M | 0.37% | 30,320 | SH |
| 41 | AMETEK INC | AME | 031100100 | $7.1M | 0.34% | 29,310 | SH |
| 42 | LAM RESEARCH CORP | LRCX | 512807306 | $6.8M | 0.33% | 15,698 | SH |
| 43 | PROCTER & GAMBLE CO | PG | 742718109 | $6.7M | 0.32% | 45,382 | SH |
| 44 | CENCORA INC | COR | 03073E105 | $6.5M | 0.31% | 22,893 | SH |
| 45 | HUBBELL INC | HUBB | 443510607 | $6.5M | 0.31% | 12,355 | SH |
| 46 | MASTERCARD INCORPORATED | MA | 57636Q104 | $6.3M | 0.30% | 12,236 | SH |
| 47 | KLA CORP | KLAC | 482480100 | $6.0M | 0.29% | 19,775 | SH |
| 48 | GENERAL MILLS INC | GIS | 370334104 | $5.8M | 0.28% | 167,749 | SH |
| 49 | MONDELEZ INTL INC | MDLZ | 609207105 | $5.8M | 0.28% | 99,455 | SH |
| 50 | MCKESSON CORP | MCK | 58155Q103 | $5.7M | 0.28% | 7,577 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-13 | $2.08B | 549 | 0001104659-26-095882 |
| 2026-03-31 | 2026-05-14 | $1.78B | 562 | 0001104659-26-061164 |
| 2025-12-31 | 2026-02-13 | $2.08B | 572 | 0001104659-26-015183 |
| 2025-09-30 | 2025-11-14 | $2.23B | 570 | 0001104659-25-111991 |
PARIS, I0 75013