# SEAGATE TECHNOLOGY HLDNGS PL (STX) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: G7997R103
Page URL: https://superinvestorclub.com/stock/STX
Last updated: 2026-08-29T13:47:57.730Z

## Summary

As of the most recent 13F filing period, SEAGATE TECHNOLOGY HLDNGS PL (STX) is held by 6 tracked superinvestors with an aggregate position value of $1.58B representing 01000109285100199822122000301151210 shares.

## Top institutional holders (6)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Stephen Mandel](https://superinvestorclub.com/manager/61) | Lone Pine Capital | 1000109 | $965.1M | 5.90% | 2026-06-30 |
| 2 | [Chase Coleman](https://superinvestorclub.com/manager/20) | Tiger Global Management | 285100 | $275.1M | 1.15% | 2026-06-30 |
| 3 | [Ray Dalio](https://superinvestorclub.com/manager/6) | Bridgewater Associates | 199822 | $192.8M | 0.79% | 2026-06-30 |
| 4 | [Stanley Druckenmiller](https://superinvestorclub.com/manager/19) | Duquesne Family Office | 122000 | $117.7M | 2.26% | 2026-06-30 |
| 5 | [Dan Sundheim](https://superinvestorclub.com/manager/303) | D1 Capital Partners | 30115 | $29.1M | 0.08% | 2026-06-30 |
| 6 | [Lee Ainslie](https://superinvestorclub.com/manager/58) | Maverick Capital | 1210 | $1.2M | 0.01% | 2026-06-30 |

## Ownership history (quarter-over-quarter)

- 2023-03-31: 1 holders, $9.0M aggregate, 0136077 shares
- 2023-06-30: 1 holders, $37.1M aggregate, 0600000 shares
- 2023-09-30: 2 holders, $113.2M aggregate, 01115924600000 shares
- 2023-12-31: 1 holders, $94.2M aggregate, 01103733 shares
- 2024-03-31: 2 holders, $242.5M aggregate, 014389831166616 shares
- 2024-06-30: 2 holders, $293.7M aggregate, 017552781088271 shares
- 2024-09-30: 3 holders, $256.3M aggregate, 01640369436840263000 shares
- 2024-12-31: 4 holders, $183.5M aggregate, 015640765095002858223562 shares
- 2025-03-31: 3 holders, $40.1M aggregate, 02465002194775713 shares
- 2025-06-30: 3 holders, $328.3M aggregate, 0205143419749025883 shares
- 2025-09-30: 4 holders, $446.0M aggregate, 015929831621088590048567 shares
- 2025-12-31: 2 holders, $278.0M aggregate, 0729325279977 shares

## Recent congressional trades (13)

- 2025-12-18: Julie Johnson (Democrat-TX) sale $1,001 - $15,000
- 2025-11-13: Julie Johnson (Democrat-TX) sale $1,001 - $15,000
- 2025-10-28: Kevin Hern (Republican-OK) sale $15,001 - $50,000
- 2025-10-06: Kevin Hern (Republican-OK) sale $15,001 - $50,000
- 2025-09-08: Lisa McClain (Republican-MI) purchase $15,001 - $50,000
- 2025-08-14: Julie Johnson (Democrat-TX) sale $1,001 - $15,000
- 2025-08-14: Julie Johnson (Democrat-TX) sale $1,001 - $15,000
- 2025-07-29: Julie Johnson (Democrat-TX) sale $1,001 - $15,000
- 2025-07-29: Julie Johnson (Democrat-TX) sale $1,001 - $15,000
- 2025-04-23: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2025-04-15: Ro Khanna (Democrat-CA) purchase $1,001 - $15,000
- 2025-04-08: Rob Bresnahan (Republican-PA) sale $1,001 - $15,000
- 2025-03-06: Ro Khanna (Democrat-CA) sale $1,001 - $15,000

## Recent insider transactions (0)


## Citation

When citing, use: "SEAGATE TECHNOLOGY HLDNGS PL (STX) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/STX), aggregating SEC 13F, Form 4, and congressional disclosures."