13F · Tempus AI Inc
TEM institutional ownership and 13F activity
Track TEM institutional ownership through SEC 13F filings, including top shareholders, reported positions, portfolio weights, buys, sells, and quarterly holding trends.
Historical filing data, not live positions.Snapshot generated Sep 12, 2026 from SEC EDGAR 13F-HR information tables. 13F reports can arrive up to 45 days after quarter-end and omit many asset types.
01
TEM Institutional Ownership Snapshot
See how many institutions reported TEM, their combined market value, ownership concentration, and latest position changes.
Active holders1
Reported value$580.6M
Top 5 concentration100.0%
New holders0
Reduced holders0
Exited holders0
02
TEM Ownership Takeaways
Highlights from the latest TEM 13F filings, including the largest holder, biggest increase, largest reduction, and ownership concentration.
03
Who Owns TEM? Institutional Holders
Compare 1 current and exited TEM positions by manager, shares, reported market value, portfolio weight, and quarter-over-quarter change.
| Manager | Shares | Reported value | Portfolio weight | Share change | Status |
|---|---|---|---|---|---|
| Cathie Wood / ARK InvestJun 30, 2026 · CIK 0001697748 | 10M | $580.6M | 3.77% | +4.3% | Increased |
04
TEM Institutional Buying and Selling
See which institutions opened, increased, reduced, or exited TEM positions compared with their previous 13F filing.
New 0
No holders in this category.
Increased 1
ARK Invest$580.6M · +4.3%
Reduced 0
No holders in this category.
Exited 0
No holders in this category.
05
Types of Institutional Holders
Compare concentrated funds, diversified managers, and broad portfolios that reported TEM. Categories are based on portfolio breadth, not SEC classifications.
Broad portfolios1
tracked holders06
TEM Institutional Ownership by Quarter
Follow reported TEM holders, shares, and market value across recent quarters. The institutions included may vary by filing period.
Q2 20261 holders
$580.6M10M sharesQ1 20261 holders
$434.5M9.6M sharesQ4 20251 holders
$446.3M7.6M sharesQ3 20251 holders
$579.2M7.2M sharesQ2 20251 holders
$471.6M7.4M shares| Quarter | Holders | Reported value | Shares | New | Exits |
|---|---|---|---|---|---|
| Jun 30, 2026 | 1 | $580.6M | 10M | 0 | 0 |
| Mar 31, 2026 | 1 | $434.5M | 9.6M | 0 | 0 |
| Dec 31, 2025 | 1 | $446.3M | 7.6M | 0 | 0 |
| Sep 30, 2025 | 1 | $579.2M | 7.2M | 0 | 0 |
| Jun 30, 2025 | 1 | $471.6M | 7.4M | 0 | 1 |
07
Stocks Held by Similar Institutions
Discover other stocks reported by institutions that also hold TEM, and compare holder counts, market value, and concentration.
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Common Questions About TEM
Who is the largest tracked institutional holder of TEM?
ARK Invest is the largest active holder in the current TEM sample, reporting $580.6M. The TEM holder table ranks every matched manager.
Which institution increased its TEM position the most?
ARK Invest recorded the largest increase or new position by current reported value at $580.6M. Its row appears in the TEM change section.
Which institution reduced or exited TEM most significantly?
No tracked institution reported a reduction or exit in TEM during the current cycle.
Did new holders enter or existing holders exit TEM?
0 new holders entered and 0 holders fully exited in the current filing cycle. Counts reflect the SEC 13F filings currently included on BasisPilot.
How concentrated is tracked ownership in TEM?
The five largest tracked holders account for 100.0% of aggregate reported TEM value. This is concentration within the tracked sample, not the entire market.
How has tracked ownership in TEM changed across four quarters?
From the oldest comparable quarter to the latest, aggregate reported TEM value among tracked managers increased by 23.1%. Manager coverage can vary by quarter.
What company evidence should be checked alongside TEM's 13F changes?
Review Tempus AI Inc's latest earnings, SEC filings, guidance, capital allocation, and material company events. Delayed 13F data alone cannot confirm that a manager still holds the same position today.
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Sources and Methodology
Source: SEC EDGAR Form 13F-HR information tables. Positions are grouped by investment manager and ticker, then compared with the prior available filing. 13F data is delayed, historical, and does not represent a manager's complete or current portfolio.