# Putnam Sustainable Future Fund

Putnam Sustainable Future Fund is a registered fund series of Putnam Investment Funds (series S000003851). Net assets $327.4M as of 2026-04-30.

## Profile

- Series ID: S000003851
- Registrant: Putnam Investment Funds
- LEI: 3CLKG0DCBVKMOJ7DNT15
- Net assets: $327.4M
- Total assets: $328.6M
- As of: 2026-04-30

## Advisers

- [Franklin Advisers, Inc. (Subadvisor)](https://search.stillhousedata.com/firm/104517)
- [Putnam Investment Management, LLC (Advisor)](https://search.stillhousedata.com/firm/106629)
- [Franklin Templeton Investment Management Limited (Subadvisor)](https://search.stillhousedata.com/firm/111360)

## Top holdings (115 reported)

_Showing 15 of 115 holdings by value._

| Holding | Ticker | Value | % of fund |
| --- | --- | --- | --- |
| [Vertiv Holdings Co.](https://search.stillhousedata.com/security/92537N108) | — | $20.9M | 638.14% |
| [Quanta Services, Inc.](https://search.stillhousedata.com/security/74762E102) | — | $12.5M | 382.35% |
| Royal Caribbean Cruises Ltd. | — | $8.9M | 272.95% |
| [Datadog, Inc.](https://search.stillhousedata.com/security/23804L103) | — | $8.4M | 255.18% |
| [Hilton Worldwide Holdings, Inc.](https://search.stillhousedata.com/security/43300A203) | — | $8.2M | 250.44% |
| Viking Holdings Ltd. | — | $8.1M | 247.94% |
| [Vistra Corp.](https://search.stillhousedata.com/security/92840M102) | — | $7.6M | 231.90% |
| [GE Vernova, Inc.](https://search.stillhousedata.com/security/36828A101) | — | $7.5M | 229.01% |
| [Keurig Dr. Pepper, Inc.](https://search.stillhousedata.com/security/49271V100) | — | $6.7M | 203.84% |
| [WW Grainger, Inc.](https://search.stillhousedata.com/security/384802104) | — | $6.6M | 201.49% |
| [Federal Signal Corp.](https://search.stillhousedata.com/security/313855108) | — | $6.5M | 199.71% |
| [Dexcom, Inc.](https://search.stillhousedata.com/security/252131107) | — | $6.3M | 192.44% |
| [Xylem, Inc.](https://search.stillhousedata.com/security/98419M100) | — | $6.0M | 182.62% |
| ASML Holding NV | — | $5.8M | 177.57% |
| [Bright Horizons Family Solutions, Inc.](https://search.stillhousedata.com/security/109194100) | — | $5.8M | 177.14% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-04-30 | $327.4M |
| 2026-01-31 | $339.6M |
| 2025-10-31 | $373.5M |
| 2025-07-31 | $386.1M |
| 2025-04-30 | $348.9M |
| 2025-01-31 | $429.9M |
| 2024-10-31 | $418.7M |
| 2024-07-31 | $417.0M |

## More

- [Registrant: Putnam Investment Funds](https://search.stillhousedata.com/registrant/932101)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/fund/S000003851.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.