American Century increased MATX position by 70,442 shares
This StonkWhisper whale intelligence report documents significant institutional position changes in $MATX based on SEC 13F filings and block-level trading data. Quarterly 13F disclosures are required for institutional investment managers with at least $100 million in qualifying assets under management. These filings reveal long positions in U.S. equities held as of quarter end. Material changes in institutional positioning — particularly from concentrated funds with a history of high-conviction bets — are tracked by StonkWhisper as leading indicators of institutional thesis formation or exit.
Position Change Detail
Other American Century Positions This Period
| Ticker | Issuer | Change Type | Share Change | Value |
|---|---|---|---|---|
| KOS | KOSMOS ENERGY LTD | Decreased | 19,075,012 | $10.3B |
| NFLX | NETFLIX INC | Increased | +15,804,792 | $1642.0B |
| KVUE | KENVUE INC | Decreased | 10,309,137 | $461.2B |
| T | AT&T INC | Decreased | 6,329,511 | $98.5B |
| FNB | F N B CORP | Decreased | 5,985,954 | $42.8B |
| GFL | GFL ENVIRONMENTAL INC | Decreased | 5,025,075 | $42.9B |
| VICI | VICI PPTYS INC | Decreased | 4,649,026 | $68.4B |
| MARA | MARA HOLDINGS INC | Decreased | 4,372,799 | $2.2B |
| UAA | UNDER ARMOUR INC | Decreased | 3,552,342 | $2.3B |
| APH | AMPHENOL CORP NEW | Increased | +3,437,013 | $788.3B |
Other Whales Moving MATX This Period
| Manager | Change Type | Share Change |
|---|---|---|
| Millennium | Decreased | 372,214 |
| DE Shaw | Decreased | 86,315 |
| BlackRock | Decreased | 63,817 |
| Steadfast | New | +63,200 |
| Balyasny | Decreased | 61,895 |
| Tudor | Exited | 57,850 |
| Two Sigma | Decreased | 55,433 |
| ExodusPoint | Exited | 55,392 |
| Citadel | Decreased | 36,400 |
| Hudson Bay | New | +35,984 |
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Data sourced from SEC 13F institutional holdings filings. This page does not constitute financial advice. StonkWhisper presents public records — it does not verify or guarantee the accuracy of institutional filings. 13F filings are reported quarterly and may lag actual positions.
Last updated: May 04, 2026 at 06:01 UTC