Massachusetts Mutual Life Insurance Co holds a concentrated book of 2 stocks worth $2.2B as of Q1 2026 (disclosed Apr 28, 2026, a ~45-day 13F lag). Their largest long position is Invesco Ltd at 91% of the equity book.
The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/225602/holdings"
Use Arkolith to show MASSACHUSETTS MUTUAL LIFE INSURANCE CO's latest holdings, largest changes, and filing provenance.
Top-heavy: concentrated book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
100% mapped to company sectors
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Invesco Ltd COM | $2.0B | 81.33M | 91.1% | —Held | |
| 2 | Jefferies Financial Group Inc COM | $192.1M | 4.65M | 8.9% | —Held |
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q1 2026 | Mar 31, 2026 | Apr 28, 2026 | 2 | $2.2B | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 13, 2026 | 2 | $2.4B | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 4, 2025 | 2 | $2.2B | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Aug 15, 2025 | 2 | $1.5B | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 14, 2025 | 2 | $1.5B | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 13, 2025 | 2 | $1.8B | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Nov 15, 2024 | 2 | $1.7B | 13F-HR |
| Q1 2015 | Mar 31, 2015 | Apr 16, 2015 | 46 | $88.6M | 13F-HR |
| Q4 2014 | Dec 31, 2014 | Jan 15, 2015 | 21 | $33.2M | 13F-HR |
| Q3 2014 | Sep 30, 2014 | Nov 6, 2014 | 25 | $32.9M | 13F-HR |
| Q2 2014 | Jun 30, 2014 | Jul 14, 2014 | 22 | $30.6M | 13F-HR |
| Q1 2014 | Mar 31, 2014 | May 9, 2014 | 20 | $27.2M | 13F-HR |
| Q4 2013 | Dec 31, 2013 | Feb 13, 2014 | 20 | $24.2M | 13F-HR |
| Q3 2013 | Sep 30, 2013 | Oct 31, 2013 | 137 | $104.8M | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. Price-derived performance is withheld until the price-source policy and freshness gate are green.