Micron Technology, Inc.
MX ˙ BMV ˙ LU1650489385
SecurityMX:MU / Micron Technology, Inc.
InstitutionCapital Fund Management S.a.
Latest Disclosed Ownership419,411 shares
Latest Disclosed Value $ 141,693,812
Capital Fund Management S.a. ownership in MU / Micron Technology, Inc.

On May 14, 2026 - Capital Fund Management S.a. filed a 13F-HR form disclosing ownership of 419,411 shares of Micron Technology, Inc. (MX:MU) valued at $141,693,812 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 300,781 shares of Micron Technology, Inc.. This represents a change in shares of 39.44% during the quarter.

Capital Fund Management S.a. has a history of taking positions in derivatives of the underlying security (MU) in the form of stock options. The firm currently holds call options representing 259,000 of underlying shares valued at $87,500,560 USD and put options representing 697,100 of underlying shares valued at $235,508,264 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
(Premium Subscription Required)

In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:MU / Micron Technology, Inc. Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F MICRON TECHNOLOGY INC COM MICRON TECHNOLOGY INC COM 595112103 419,411 118,630 39.44 141,694 65.06 0.6404
2026-02-17 2025-12-31 13F MICRON TECHNOLOGY INC COM MICRON TECHNOLOGY INC COM 595112103 300,781 -269,995 -47.30 85,846 -10.11 0.2385
2025-11-13 2025-09-30 13F MICRON TECHNOLOGY COM 595112103 570,776 570,776 95,502 0.2502
2024-05-15 2024-03-31 13F MICRON TECHNOLOGY COM 595112103 0 -708,885 -100.00 0 -100.00
2024-02-14 2023-12-31 13F MICRON TECHNOLOGY COM 595112103 708,885 708,885 60,496 0.1626
2022-11-14 2022-09-30 13F MICRON TECHNOLOGY COM 595112103 0 -413,731 -100.00 0 -100.00
2022-08-12 2022-06-30 13F MICRON TECHNOLOGY COM 595112103 413,731 65,915 18.95 22,871 -15.58 0.2080
2022-05-12 2022-03-31 13F MICRON TECHNOLOGY COM 595112103 347,816 140,918 68.11 27,091 40.57 0.2212
2022-02-10 2021-12-31 13F MICRON TECHNOLOGY COM 595112103 206,898 -112,305 -35.18 19,273 -14.94 0.1388
2021-11-12 2021-09-30 13F MICRON TECHNOLOGY COM 595112103 319,203 -268,725 -45.71 22,657 -54.65 0.1678
2021-08-12 2021-06-30 13F MICRON TECHNOLOGY COM 595112103 587,928 74,968 14.61 49,962 10.42 0.3955
2021-05-14 2021-03-31 13F MICRON TECHNOLOGY COM 595112103 512,960 106,616 26.24 45,248 48.12 0.4998
2021-02-12 2020-12-31 13F MICRON TECHNOLOGY COM 595112103 406,344 -336,071 -45.27 30,549 -12.38 0.2880
2020-11-13 2020-09-30 13F MICRON TECHNOLOGY COM 595112103 742,415 192,115 34.91 34,864 22.97 0.4306
2020-08-13 2020-06-30 13F MICRON TECHNOLOGY COM 595112103 550,300 550,300 -25.88 28,351 -18.68 0.4499
2020-05-13 2020-03-31 13F Micron Technology COM 595112103 0 -10,143 -100.00 0 -100.00
2020-02-13 2019-12-31 13F Micron Technology COM 595112103 10,143 -164,478 -94.19 545 -92.72 0.0043
2019-11-13 2019-09-30 13F Micron Technology COM 595112103 174,621 174,621 1,621.59 7,483 1,273.03 0.0674
2019-08-12 2019-06-30 13F Micron Technology COM 595112103 0 -315,877 -100.00 0 -100.00
2019-05-13 2019-03-31 13F Micron Technology COM 595112103 315,877 0 0.00 10,023 0.00 0.0887
2019-02-13 2018-12-31 13F Micron Technology COM 595112103 315,877 -124,183 -28.22 10,023 -49.64 0.0887
2018-11-14 2018-09-30 13F Micron Technology COM 595112103 440,060 82,145 22.95 19,904 6.05 0.1085
2018-08-14 2018-06-30 13F Micron Technology COM 595112103 357,915 -466,811 -56.60 18,769 -56.35 0.0979
2018-05-15 2018-03-31 13F Micron Technology COM 595112103 824,726 824,726 130.43 43,001 129.11 0.2581
2016-10-31 2016-09-30 13F Micron Technology COM 595112103 0 -207,283 -100.00 0 -100.00
2016-07-27 2016-06-30 13F Micron Technology COM 595112103 207,283 207,283 0.00 2,852 0.0267
2016-05-02 2016-03-31 13F Micron Technology COM 595112103 0 0 0 0.0000
2016-01-28 2015-12-31 13F Micron Technology COM 595112103 0 -35,900 -100.00 0 -100.00
2015-10-27 2015-09-30 13F Micron Technology COM 595112103 35,900 -1,900 -5.03 538 -24.44 0.0060
2015-07-28 2015-06-30 13F Micron Technology COM 595112103 37,800 -168,418 -81.67 712 -87.27 0.0090
2015-04-28 2015-03-31 13F Micron Technology COM 595112103 206,218 206,218 445.55 5,595 685.81 0.0763
2015-01-28 2014-12-31 13F Micron Technology COM 595112103 0 -12,000 -100.00 0 -100.00
2014-10-31 2014-09-30 13F Micron Technology COM 595112103 12,000 -749,093 -98.42 411 -98.36 0.0046
2014-08-01 2014-06-30 13F Micron Technology COM 595112103 761,093 -649,122 -46.03 25,078 -24.84 0.2648
2014-05-14 2014-03-31 13F Micron Technology COM 595112103 1,410,215 633,005 81.45 33,366 97.29 0.4081
2014-01-31 2013-12-31 13F Micron Technology COM 595112103 777,210 203,327 35.43 16,912 68.68 0.2092
2013-10-31 2013-09-30 13F Micron Technology COM 595112103 573,883 -217,815 -27.51 10,026 -11.63 0.1386
2013-07-31 2013-06-30 13F Micron Technology COM 595112103 791,698 791,698 11,345 0.1732
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-14 2026-03-31 13F MICRON TECHNOLOGY INC COM MICRON TECHNOLOGY INC COM Call 259,000 -52.59 87,501 -43.88 n/a n/a n/a
2026-02-17 2025-12-31 13F MICRON TECHNOLOGY INC COM MICRON TECHNOLOGY INC COM Call 546,300 -27.65 155,919 23.41 n/a n/a n/a
2025-11-13 2025-09-30 13F MICRON TECHNOLOGY COM Call 755,100 -3.78 126,343 30.62 n/a n/a n/a
2025-08-13 2025-06-30 13F MICRON TECHNOLOGY COM Call 784,800 0.20 96,727 42.14 n/a n/a n/a
2025-05-14 2025-03-31 13F MICRON TECHNOLOGY COM Call 783,200 2.90 68,052 6.24 n/a n/a n/a
2025-02-13 2024-12-31 13F MICRON TECHNOLOGY COM Call 761,100 -48.60 64,054 -58.29 n/a n/a n/a
2024-11-13 2024-09-30 13F MICRON TECHNOLOGY COM Call 1,480,800 58.39 153,574 24.89 n/a n/a n/a
2024-08-13 2024-06-30 13F MICRON TECHNOLOGY COM Call 934,900 161.58 122,967 191.85 n/a n/a n/a
2024-05-15 2024-03-31 13F MICRON TECHNOLOGY COM Call 357,400 41.49 42,134 95.46 n/a n/a n/a
2024-02-14 2023-12-31 13F MICRON TECHNOLOGY COM Call 252,600 -47.31 21,557 -33.90 n/a n/a n/a
2023-11-14 2023-09-30 13F MICRON TECHNOLOGY COM Call 479,400 397.82 32,614 436.66 n/a n/a n/a
2023-08-14 2023-06-30 13F MICRON TECHNOLOGY COM Call 96,300 -85.29 6,077 -84.61 n/a n/a n/a
2023-05-15 2023-03-31 13F MICRON TECHNOLOGY COM Call 654,600 -32.90 39,499 -19.00 n/a n/a n/a
2023-02-13 2022-12-31 13F MICRON TECHNOLOGY COM Call 975,600 11.92 48,760 11.65 n/a n/a n/a
2022-11-14 2022-09-30 13F MICRON TECHNOLOGY COM Call 871,700 55.19 43,672 40.65 n/a n/a n/a
2022-08-12 2022-06-30 13F MICRON TECHNOLOGY COM Call 561,700 127.50 31,051 61.46 n/a n/a n/a
2022-05-12 2022-03-31 13F MICRON TECHNOLOGY COM Call 246,900 156.12 19,231 114.18 n/a n/a n/a
2022-02-10 2021-12-31 13F MICRON TECHNOLOGY COM Call 96,400 -71.98 8,980 -63.23 n/a n/a n/a
2021-11-12 2021-09-30 13F MICRON TECHNOLOGY COM Call 344,000 -42.62 24,417 -52.07 n/a n/a n/a
2021-08-12 2021-06-30 13F MICRON TECHNOLOGY COM Call 599,500 110.50 50,946 102.79 n/a n/a n/a
2021-05-14 2021-03-31 13F MICRON TECHNOLOGY COM Call 284,800 113.97 25,122 151.07 n/a n/a n/a
2021-02-12 2020-12-31 13F MICRON TECHNOLOGY COM Call 133,100 1.76 10,006 62.91 n/a n/a n/a
2020-11-13 2020-09-30 13F MICRON TECHNOLOGY COM Call 130,800 -17.16 6,142 -24.50 n/a n/a n/a
2020-08-13 2020-06-30 13F MICRON TECHNOLOGY COM Call 157,900 -65.96 8,135 -58.31 n/a n/a n/a
2020-05-13 2020-03-31 13F Micron Technology COM Call 463,900 -44.30 19,512 -56.44 n/a n/a n/a
2020-02-13 2019-12-31 13F Micron Technology COM Call 832,900 -8.56 44,793 14.76 n/a n/a n/a
2019-11-13 2019-09-30 13F Micron Technology COM Call 910,900 119.86 39,032 144.13 n/a n/a n/a
2019-08-12 2019-06-30 13F Micron Technology COM Call 414,300 -60.75 15,988 -63.35 n/a n/a n/a
2019-05-13 2019-03-31 13F/A Micron Technology COM Call 1,055,600 -32.52 43,628 -12.10 n/a n/a n/a
2019-05-13 2019-03-31 13F Micron Technology COM Call 1,564,300 49,635 n/a n/a n/a
2019-02-13 2018-12-31 13F Micron Technology COM Call 1,564,300 173.00 49,635 91.52 n/a n/a n/a
2018-11-14 2018-09-30 13F Micron Technology COM Call 573,000 -26.26 25,917 -36.40 n/a n/a n/a
2018-08-14 2018-06-30 13F Micron Technology COM Call 777,100 33.59 40,751 34.36 n/a n/a n/a
2018-05-15 2018-03-31 13F Micron Technology COM Call 581,700 -60.05 30,330 -49.34 n/a n/a n/a
2018-02-09 2017-12-31 13F Micron Technology COM Call 1,456,100 15.99 59,875 21.27 n/a n/a n/a
2017-11-13 2017-09-30 13F Micron Technology COM Call 1,255,400 17.44 49,375 54.68 n/a n/a n/a
2017-08-10 2017-06-30 13F Micron Technology COM Call 1,069,000 -6.45 31,920 -3.34 n/a n/a n/a
2017-05-03 2017-03-31 13F Micron Technology COM Call 1,142,700 -46.13 33,024 -28.98 n/a n/a n/a
2017-02-08 2016-12-31 13F Micron Technology COM Call 2,121,200 25.81 46,497 55.10 n/a n/a n/a
2016-10-31 2016-09-30 13F Micron Technology COM Call 1,686,100 63.40 29,979 111.13 n/a n/a n/a
2016-07-27 2016-06-30 13F Micron Technology COM Call 1,031,900 0.00 14,199 31.42 n/a n/a n/a
2016-05-02 2016-03-31 13F Micron Technology COM Call 1,031,900 505.93 10,804 348.11 n/a n/a n/a
2016-01-28 2015-12-31 13F Micron Technology COM Call 170,300 -80.27 2,411 -81.35 n/a n/a n/a
2015-10-27 2015-09-30 13F Micron Technology COM Call 863,000 108.91 12,928 66.11 n/a n/a n/a
2015-07-28 2015-06-30 13F Micron Technology COM Call 413,100 2,514.56 7,783 1,714.22 n/a n/a n/a
2015-04-28 2015-03-31 13F Micron Technology COM Call 15,800 -96.18 429 -94.49 n/a n/a n/a
2015-01-28 2014-12-31 13F Micron Technology COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2014-10-31 2014-09-30 13F Micron Technology COM Call 829,900 -25.99 28,432 -23.05 n/a n/a n/a
2014-08-01 2014-06-30 13F Micron Technology COM Call 1,121,300 43.72 36,947 100.15 n/a n/a n/a
2014-05-14 2014-03-31 13F Micron Technology COM Call 780,200 -10.57 18,460 -2.76 n/a n/a n/a
2014-01-31 2013-12-31 13F Micron Technology COM Call 872,400 1,128.73 18,983 1,430.89 n/a n/a n/a
2013-10-31 2013-09-30 13F Micron Technology COM Call 71,000 1,240 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-14 2026-03-31 13F MICRON TECHNOLOGY INC COM MICRON TECHNOLOGY INC COM Put 697,100 -39.79 235,508 -28.73 n/a n/a n/a
2026-02-17 2025-12-31 13F MICRON TECHNOLOGY INC COM MICRON TECHNOLOGY INC COM Put 1,157,800 -10.55 330,448 52.59 n/a n/a n/a
2025-11-13 2025-09-30 13F MICRON TECHNOLOGY COM Put 1,294,300 -10.69 216,562 21.24 n/a n/a n/a
2025-08-13 2025-06-30 13F MICRON TECHNOLOGY COM Put 1,449,300 38.49 178,626 96.44 n/a n/a n/a
2025-05-14 2025-03-31 13F MICRON TECHNOLOGY COM Put 1,046,500 -8.52 90,930 -5.56 n/a n/a n/a
2025-02-13 2024-12-31 13F MICRON TECHNOLOGY COM Put 1,144,000 1.99 96,279 -17.24 n/a n/a n/a
2024-11-13 2024-09-30 13F MICRON TECHNOLOGY COM Put 1,121,700 113.54 116,332 68.37 n/a n/a n/a
2024-08-13 2024-06-30 13F MICRON TECHNOLOGY COM Put 525,300 237.60 69,093 276.67 n/a n/a n/a
2024-05-15 2024-03-31 13F MICRON TECHNOLOGY COM Put 155,600 -20.53 18,344 9.78 n/a n/a n/a
2024-02-14 2023-12-31 13F MICRON TECHNOLOGY COM Put 195,800 -60.58 16,710 -50.55 n/a n/a n/a
2023-11-14 2023-09-30 13F MICRON TECHNOLOGY COM Put 496,700 562.27 33,791 613.92 n/a n/a n/a
2023-08-14 2023-06-30 13F MICRON TECHNOLOGY COM Put 75,000 -70.39 4,733 -69.03 n/a n/a n/a
2023-05-15 2023-03-31 13F MICRON TECHNOLOGY COM Put 253,300 -69.28 15,284 -62.91 n/a n/a n/a
2023-02-13 2022-12-31 13F MICRON TECHNOLOGY COM Put 824,600 60.18 41,214 59.80 n/a n/a n/a
2022-11-14 2022-09-30 13F MICRON TECHNOLOGY COM Put 514,800 -47.26 25,791 -52.21 n/a n/a n/a
2022-08-12 2022-06-30 13F MICRON TECHNOLOGY COM Put 976,200 222.39 53,964 128.81 n/a n/a n/a
2022-05-12 2022-03-31 13F MICRON TECHNOLOGY COM Put 302,800 64.92 23,585 37.91 n/a n/a n/a
2022-02-10 2021-12-31 13F MICRON TECHNOLOGY COM Put 183,600 -65.19 17,102 -54.31 n/a n/a n/a
2021-11-12 2021-09-30 13F MICRON TECHNOLOGY COM Put 527,400 -33.24 37,435 -44.24 n/a n/a n/a
2021-08-12 2021-06-30 13F MICRON TECHNOLOGY COM Put 790,000 68.88 67,134 62.69 n/a n/a n/a
2021-05-14 2021-03-31 13F MICRON TECHNOLOGY COM Put 467,800 111.48 41,265 148.14 n/a n/a n/a
2021-02-12 2020-12-31 13F MICRON TECHNOLOGY COM Put 221,200 22.96 16,630 96.84 n/a n/a n/a
2020-11-13 2020-09-30 13F MICRON TECHNOLOGY COM Put 179,900 -14.37 8,448 -21.95 n/a n/a n/a
2020-08-13 2020-06-30 13F MICRON TECHNOLOGY COM Put 210,100 -62.75 10,824 -54.37 n/a n/a n/a
2020-05-13 2020-03-31 13F Micron Technology COM Put 564,000 -41.87 23,722 -54.54 n/a n/a n/a
2020-02-13 2019-12-31 13F Micron Technology COM Put 970,300 -3.14 52,183 21.56 n/a n/a n/a
2019-11-13 2019-09-30 13F Micron Technology COM Put 1,001,800 151.01 42,927 178.73 n/a n/a n/a
2019-08-12 2019-06-30 13F Micron Technology COM Put 399,100 -52.45 15,401 -55.60 n/a n/a n/a
2019-05-13 2019-03-31 13F/A Micron Technology COM Put 839,300 -33.09 34,688 -12.85 n/a n/a n/a
2019-05-13 2019-03-31 13F Micron Technology COM Put 1,254,400 39,802 n/a n/a n/a
2019-02-13 2018-12-31 13F Micron Technology COM Put 1,254,400 75.66 39,802 23.23 n/a n/a n/a
2018-11-14 2018-09-30 13F Micron Technology COM Put 714,100 -42.58 32,299 -50.48 n/a n/a n/a
2018-08-14 2018-06-30 13F Micron Technology COM Put 1,243,700 3.98 65,220 4.58 n/a n/a n/a
2018-05-15 2018-03-31 13F Micron Technology COM Put 1,196,100 -48.07 62,365 -34.15 n/a n/a n/a
2018-02-09 2017-12-31 13F Micron Technology COM Put 2,303,200 27.09 94,708 32.88 n/a n/a n/a
2017-11-13 2017-09-30 13F Micron Technology COM Put 1,812,200 20.91 71,274 59.26 n/a n/a n/a
2017-08-10 2017-06-30 13F Micron Technology COM Put 1,498,800 14.28 44,754 18.08 n/a n/a n/a
2017-05-03 2017-03-31 13F Micron Technology COM Put 1,311,500 -37.93 37,902 -18.16 n/a n/a n/a
2017-02-08 2016-12-31 13F Micron Technology COM Put 2,112,900 27.72 46,315 57.46 n/a n/a n/a
2016-10-31 2016-09-30 13F Micron Technology COM Put 1,654,300 254.70 29,413 358.29 n/a n/a n/a
2016-07-27 2016-06-30 13F Micron Technology COM Put 466,400 0.00 6,418 31.44 n/a n/a n/a
2016-05-02 2016-03-31 13F Micron Technology COM Put 466,400 402.59 4,883 271.61 n/a n/a n/a
2016-01-28 2015-12-31 13F Micron Technology COM Put 92,800 -76.80 1,314 -78.07 n/a n/a n/a
2015-10-27 2015-09-30 13F Micron Technology COM Put 400,000 148.76 5,992 97.82 n/a n/a n/a
2015-07-28 2015-06-30 13F Micron Technology COM Put 160,800 -59.80 3,029 -49.45 n/a n/a n/a
2015-01-28 2014-12-31 13F Micron Technology COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2014-10-31 2014-09-30 13F Micron Technology COM Put 563,300 -26.28 19,299 -23.35 n/a n/a n/a
2014-08-01 2014-06-30 13F Micron Technology COM Put 764,100 140.13 25,177 234.40 n/a n/a n/a
2014-05-14 2014-03-31 13F Micron Technology COM Put 318,200 -20.75 7,529 -13.83 n/a n/a n/a
2014-01-31 2013-12-31 13F Micron Technology COM Put 401,500 156.39 8,737 219.33 n/a n/a n/a
2013-10-31 2013-09-30 13F Micron Technology COM Put 156,600 2,736 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.