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Ostrum Asset Management is based out of Paris. Their last reported 13F filing for Q1 2019 included $305,204,000 in managed 13F securities and a top 10 holdings concentration of 37.65%. Ostrum Asset Management's largest holding is Amazon.com Inc. with shares held of 10,000. Whalewisdom has at least 2 13F filings

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13F Sector Allocation Over Time


13F Activity

  • Market Value $305.204 Million
  • Prior Market Value $254.793 Million
  • New Purchases11 stocks
  • Additional Purchases44 stocks
  • Sold out of21 stocks
  • Reduced holdings in14 stocks
  • Top 10 Holdings % 37.65 %
  • Turnover % [1]:23.02%
  • Turnover Alt % [2]: 10.89 %
  • Time Held Top20:0.90 quarters
  • Time Held Top10:1.00 quarters
  • Time Held All:0.92 quarters

[1]: Turnover is calculated by taking the # of new holdings (initial purchases) + the # of positions sold out of (not just reduced) divided by the total # of holdings for the quarter.

[2]: Alt Turnover is calculated by taking either the total MV of new purchases or the MV of securities sold, whichever is less, divided by the total MV of the fund.

Portfolio Performance

Top 20 equal-weighted holdings. Performance numbers calculated through 2019-05-15

Performance for Q1 2019: 4.77%
Performance Last 4 Quarters: 0.0%
Performance Metrics
Stats are not available for the latest quarter

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13F Filings Available:
  • 2019-03-31 - 13F-HR (Subscription required)
  • 2018-12-31 - 13F-HR (Subscription required)
This lets you look at individual sub managers or subsidiaries within the 13F filing.

13F Managers

Subsidiaries/Managers included in latest 13F
Natixis Investment Managers International
Natixis Investment Managers SA

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