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Ken Griffin's Micron Technology, Inc. (MU) position

Yes: as of Q1 2026, Ken Griffin holds 4.6M shares of MU worth $1.6B (1.1% of the disclosed portfolio). Held since at least Q1 2021; that opening coverage snapshot is not counted as a purchase.
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Current value
$1.6B
Shares held
4.6M
% of portfolio
1.1%
Est. average buy price (i)
$210.15
est. since Q1 2021
Quarter-end price
$337.84

Estimated trade prices

Average price in quarters with purchases
$114.19
Average prices in quarters with sales
  • Q2 2025: $93.37 (107K shares sold)
  • Q1 2025: $96.05 (920K shares sold)
  • Q4 2024: $101.72 (601K shares sold)
  • Q3 2024: $104.58 (243K shares sold)
  • Q2 2024: $126.02 (789K shares sold)
  • Q1 2024: $90.51 (3.4M shares sold)
  • Q4 2023: $74.29 (1.0M shares sold)
  • Q4 2022: $54.72 (211K shares sold)
  • Q3 2022: $58.00 (83K shares sold)
  • Q2 2022: $67.92 (2.6M shares sold)
  • Q1 2022: $85.25 (394K shares sold)
  • Q3 2021: $75.09 (867K shares sold)

MU price vs Griffin's position

1Y 3Y 5Y MAX
Dates
$50$500$1,000$1,50020222023202420252026Sold 867K shares (41.3%) · Q3 2021. Average closing price $75.09 · Price range $70.23–$82.00867KsharessoldAdded 2.1M shares (168.2%) · Q4 2021. Average closing price $78.08 · Price range $66.38–$96.172.1MsharespurchasedSold 394K shares (11.9%) · Q1 2022. Average closing price $85.25 · Price range $69.40–$97.36394KsharessoldSold 2.6M shares (87.9%) · Q2 2022. Average closing price $67.92 · Price range $55.01–$77.672.6MsharessoldSold 83K shares (23.5%) · Q3 2022. Average closing price $58.00 · Price range $48.88–$65.0483KsharessoldSold 211K shares (78.5%) · Q4 2022. Average closing price $54.72 · Price range $49.12–$63.10211KsharessoldAdded 3.0M shares (over 1,000%) · Q1 2023. Average closing price $58.60 · Price range $50.37–$63.873.0MsharespurchasedAdded 3.6M shares (116.7%) · Q2 2023. Average closing price $64.28 · Price range $57.02–$73.933.6MsharespurchasedAdded 1.4M shares (20.5%) · Q3 2023. Average closing price $66.99 · Price range $60.65–$71.791.4MsharespurchasedSold 1.0M shares (12.7%) · Q4 2023. Average closing price $74.29 · Price range $64.53–$87.061.0MsharessoldSold 3.4M shares (48.2%) · Q1 2024. Average closing price $90.51 · Price range $79.50–$119.253.4MsharessoldSold 789K shares (21.5%) · Q2 2024. Average closing price $126.02 · Price range $106.77–$153.45789KsharessoldSold 243K shares (8.5%) · Q3 2024. Average closing price $104.58 · Price range $86.27–$136.82243KsharessoldSold 601K shares (22.8%) · Q4 2024. Average closing price $101.72 · Price range $84.16–$113.41601KsharessoldSold 920K shares (45.3%) · Q1 2025. Average closing price $96.05 · Price range $86.89–$109.38920KsharessoldSold 107K shares (9.6%) · Q2 2025. Average closing price $93.37 · Price range $64.72–$127.25107KsharessoldAdded 1.7M shares (168.5%) · Q3 2025. Average closing price $127.81 · Price range $105.46–$168.891.7MsharespurchasedAdded 356K shares (13.2%) · Q4 2025. Average closing price $229.63 · Price range $180.22–$294.37356KsharespurchasedAdded 1.5M shares (50.6%) · Q1 2026. Average closing price $391.76 · Price range $312.15–$467.261.5Msharespurchased← Earlier —1 purchase
Average closing price · filing quarter
$391.76
Price range · filing quarter
$312.15 – $467.26
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Added +1.5M +$605M +50.6% 4.6M May 15, 2026
Q4 2025 Added +356K +$82M +13.2% 3.1M Feb 17, 2026
Q3 2025 Added +1.7M +$216M +168.5% 2.7M Nov 14, 2025
Q2 2025 Reduced −107K −$10.0M −9.6% 1.0M Aug 14, 2025
Q1 2025 Reduced −920K −$88M −45.3% 1.1M May 15, 2025
Q4 2024 Reduced −601K −$61M −22.8% 2.0M Feb 14, 2025
Q3 2024 Reduced −243K −$25M −8.5% 2.6M Nov 14, 2024
Q2 2024 Reduced −789K −$99M −21.5% 2.9M Aug 14, 2024
Q1 2024 Reduced −3.4M −$309M −48.2% 3.7M May 15, 2024
Q4 2023 Reduced −1.0M −$77M −12.7% 7.1M Feb 14, 2024
Q3 2023 Added +1.4M +$92M +20.5% 8.1M Nov 14, 2023
Q2 2023 Added +3.6M +$233M +116.7% 6.7M Aug 14, 2023
Q1 2023 Added +3.0M +$179M +5,274.7% 3.1M May 15, 2023
Q4 2022 Reduced −211K −$12M −78.5% 58K Feb 14, 2023
Q3 2022 Reduced −83K −$4.8M −23.5% 269K Nov 14, 2022
Q2 2022 Reduced −2.6M −$174M −87.9% 351K Aug 15, 2022
Q1 2022 Reduced −394K −$34M −11.9% 2.9M May 16, 2022
Q4 2021 Added +2.1M +$162M +168.2% 3.3M Feb 14, 2022
Q3 2021 Reduced −867K −$65M −41.3% 1.2M Nov 15, 2021
Q2 2021 Added +84K +$7.1M +4.2% 2.1M Aug 16, 2021
Q1 2021 First covered – – – 2.0M May 21, 2021
Data through Q1 2026 · filed May 15, 2026
21 grouped rows from 21 quarters

Who else owns MU

Capital World Investors
owns 3.7% of shares outstanding
Est. $14.2B · Shares: 42.1M

FMR LLC
owns 2.8% of shares outstanding
Est. $10.8B · Shares: 32.1M

Primecap Management Co
owns 1.9% of shares outstanding
Est. $7.4B · Shares: 21.9M

Morgan Stanley
owns 1.5% of shares outstanding
Est. $5.7B · Shares: 16.8M

See all owners of MU →

More Griffin positions

NVIDIA Corporation(NVDA)
$3.2B
2.3% of portfolio

Amazon.com, Inc.(AMZN)
$1.7B
1.2% of portfolio

Taiwan Semiconductor Manufacturing Company Limited(TSM)
$1.4B
1.0% of portfolio

Apple Inc.(AAPL)
$1.3B
0.9% of portfolio

Meta Platforms, Inc.(META)
$1.0B
0.7% of portfolio

Broadcom Inc.(AVGO)
$1.0B
0.7% of portfolio

Common questions

Does Ken Griffin own MU?

Yes. As of Q1 2026, Ken Griffin disclosed 4.6M shares of MU, worth $1.6B. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Griffin buy MU?

Ken Griffin held MU since at least Q1 2021, when this filing coverage begins; the opening snapshot is not a disclosed purchase. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Ken Griffin sell MU?

The quarter-by-quarter table above shows each sale and reduction Ken Griffin disclosed in MU. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of MU does Ken Griffin own?

Ken Griffin disclosed 4.6M shares of MU as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Ken Griffin pay for MU?

Ken Griffin began building the MU position before our 13F history starts, so an exact average buy price cannot be estimated without understating it. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.