Seagate Technology Holdings PLC (STX)
Daily ERM3 factor decomposition: how much of STX's variance is explained by the market, its sector, and its subsector — and the ETF notionals that would neutralize each layer.
- Price
- $696.89
- Market cap
- $156.4B
- 23-day vol
- 66.1%
- Sector proxy
- XLK
- Subsector proxy
- RSPT
Risk DNA
34% of STX's variance is systematic (explainable by market, sector, and subsector factors); the rest is stock-specific.
STX carries 66% stock-specific risk against a peer average of 80% — less of what happens here is specific to this name than is typical for its cohort.
ETF hedge ratios
Dollars of ETF to short per $1 of STX held — executable hedge weights, not regression betas. L1 hedges market only; L3 adds sector and subsector layers.
| Level | Market (SPY) | Sector (XLK) | Subsector (RSPT) | Explained risk |
|---|---|---|---|---|
| L1 | $-2.20 | — | — | 15.0% |
| L2 | $1.97 | $-2.37 | — | 31.4% |
| L3 | $1.92 | $-2.19 | $-0.16 | 34.0% |
Data as of October 22, 2026. Updated daily from the ERM3 pipeline.
13F filers holding STX
From the most recent quarterly 13F filings in our tracked filer universe, largest reported position first.
- Lone Pine Capital5.9%
- Point72 Asset Management1.3%
- Tiger Global Management1.1%
- D. E. Shaw & Co.0.9%
- Bridgewater Associates0.8%
- Citadel Advisors0.4%
Browse every tracked 13F filer.
Go deeper on STX
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