SEC 13F Intelligence

Managers / Q1 2026

OSTRUM ASSET MANAGEMENT

CIK 0001767945 · 43 AVENUE PIERRE MENDES-FRANCE, PARIS, I0, 75013 · 0033178408000

Reported Value
$1.8B
Q1 2026
Positions
562
Filings on Record
21
2019–present window
Filed
May 14, 2026
original filing

Summary

Ostrum Asset Management reported $1.8B in U.S.-listed holdings across 562 positions for Q1 2026.

Its largest position, NVDA, represents 6.3% of the portfolio.

Compared with Q4 2025, the fund opened 15 new positions and exited 25.

Reported Value by Quarter

13F Reported Value
Q4 ’18: $255MQ4 ’18Q1 ’19: $305MQ2 ’19: $361MQ3 ’19: $200MQ3 ’19Q4 ’19: $210MQ1 ’20: $145MQ2 ’20: $168MQ2 ’20Q3 ’20: $155MQ1 ’23: $1.1BQ2 ’23: $1.2BQ2 ’23Q3 ’23: $1.1BQ4 ’23: $1.2BQ1 ’24: $1.3BQ1 ’24Q2 ’24: $1.1BQ3 ’24: $1.2BQ4 ’24: $1.2BQ4 ’24Q1 ’25: $1.9BQ2 ’25: $2.1BQ3 ’25: $2.2BQ3 ’25Q4 ’25: $2.1BQ1 ’26: $1.8Bfilingsflow.com

Portfolio Composition

By security type

Composition data arrives with ticker enrichment.

Quarter-over-Quarter Changes full breakdown →

Holdings — Q1 2026

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Filing History

QuarterReported ValuePositionsFiledTypeLinks
Q1 2026$1.8B562May 14, 202613F-HRchanges · EDGAR ↗
Q4 2025$2.1B572Feb 13, 202613F-HRchanges · EDGAR ↗
Q3 2025$2.2B570Nov 14, 202513F-HRchanges · EDGAR ↗
Q2 2025$2.1B571Aug 13, 202513F-HRchanges · EDGAR ↗
Q1 2025$1.9B642May 14, 202513F-HRchanges · EDGAR ↗
Q4 2024$1.2B627Feb 13, 202513F-HRchanges · EDGAR ↗
Q3 2024$1.2B635Nov 13, 202413F-HRchanges · EDGAR ↗
Q2 2024$1.1B644Aug 13, 202413F-HRchanges · EDGAR ↗
Q1 2024$1.3B654May 13, 202413F-HRchanges · EDGAR ↗
Q4 2023$1.2B659Feb 13, 202413F-HRchanges · EDGAR ↗
Q3 2023$1.1B680Nov 14, 202313F-HRchanges · EDGAR ↗
Q2 2023$1.2B672Aug 11, 202313F-HRchanges · EDGAR ↗
Q1 2023$1.1B671May 12, 202313F-HRchanges · EDGAR ↗
Q3 2020$155M56Nov 12, 202013F-HRchanges · EDGAR ↗
Q2 2020$168M67Aug 13, 202013F-HRchanges · EDGAR ↗
Q1 2020$145M64May 14, 202013F-HRchanges · EDGAR ↗
Q4 2019$210M76Feb 14, 202013F-HRchanges · EDGAR ↗
Q3 2019$200M77Nov 13, 201913F-HRchanges · EDGAR ↗
Q2 2019$361M144Aug 13, 201913F-HRchanges · EDGAR ↗
Q1 2019$305M142May 15, 201913F-HRchanges · EDGAR ↗
Q4 2018$255M154Feb 14, 201913F-HRchanges · EDGAR ↗

Other Included Managers

This filing reports holdings on behalf of 2 additional managers.

  • LOOMIS SAYLES & CO L P028-00398
  • Natixis Investment Managers SA

13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.