Micron Technology, Inc.
MX ˙ BMV ˙ LU1650489385
SecurityMX:MU / Micron Technology, Inc.
InstitutionOsterweis Capital Management Inc
Latest Disclosed Ownership190 shares
Latest Disclosed Value $ 64,190
Osterweis Capital Management Inc reports 14.80% decrease in ownership of MU / Micron Technology, Inc.

On May 15, 2026 - Osterweis Capital Management Inc filed a 13F-HR form disclosing ownership of 190 shares of Micron Technology, Inc. (MX:MU) valued at $64,190 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 223 shares of Micron Technology, Inc.. This represents a change in shares of -14.80% during the quarter.

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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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)
2026-05-15 2026-03-31 13F MICRON TECHNOLOGY COM 595112103 190 -33 -14.80 64 1.59 0.0025
2026-02-17 2025-12-31 13F MICRON TECHNOLOGY COM 595112103 223 0 0.00 64 70.27 0.0027
2025-11-14 2025-09-30 13F MICRON TECHNOLOGY COM 595112103 223 150 205.48 37 362.50 0.0017
2025-08-14 2025-06-30 13F MICRON TECHNOLOGY COM 595112103 73 -10 -12.05 9 14.29 0.0004
2025-06-05 2025-03-31 13F/A-1 MICRON TECHNOLOGY COM 595112103 83 4 5.06 7 16.67 0.0004
2025-05-14 2025-03-31 13F MICRON TECHNOLOGY COM 595112103 83 4 72 0.0003
2025-06-05 2024-12-31 13F/A-1 MICRON TECHNOLOGY COM 595112103 79 -268,250 -99.97 7 -99.98 0.0003
2025-02-13 2024-12-31 13F MICRON TECHNOLOGY COM 595112103 79 -268,250 0 0.0003
2024-11-14 2024-09-30 13F MICRON TECHNOLOGY COM 595112103 268,329 88,577 49.28 27,828 17.71 1.4098
2024-08-14 2024-06-30 13F MICRON TECHNOLOGY COM 595112103 179,752 -188,724 -51.22 23,643 -45.57 1.2216
2024-05-15 2024-03-31 13F MICRON TECHNOLOGY COM 595112103 368,476 -4,130 -1.11 43,440 36.61 2.5514
2024-02-14 2023-12-31 13F MICRON TECHNOLOGY COM 595112103 372,606 29,774 8.68 31,798 36.34 2.0183
2023-11-14 2023-09-30 13F MICRON TECHNOLOGY COM 595112103 342,832 16,085 4.92 23,323 13.10 1.7087
2023-08-14 2023-06-30 13F MICRON TECHNOLOGY COM 595112103 326,747 91,657 38.99 20,621 45.37 1.3650
2023-05-15 2023-03-31 13F MICRON TECHNOLOGY COM 595112103 235,090 26,680 12.80 14,185 36.18 0.9649
2023-02-14 2022-12-31 13F MICRON TECHNOLOGY COM 595112103 208,410 208,410 10,416 0.7563
2021-11-15 2021-09-30 13F MICRON TECHNOLOGY COM 595112103 0 -66,623 -100.00 0 -100.00
2021-08-16 2021-06-30 13F MICRON TECHNOLOGY COM 595112103 66,623 -226,107 -77.24 5,662 -78.07 0.2912
2021-05-14 2021-03-31 13F MICRON TECHNOLOGY COM 595112103 292,730 -21,385 -6.81 25,822 9.35 1.4074
2021-02-12 2020-12-31 13F MICRON TECHNOLOGY COM 595112103 314,115 -82,455 -20.79 23,615 26.81 1.4086
2020-11-13 2020-09-30 13F MICRON TECHNOLOGY COM 595112103 396,570 -74,382 -15.79 18,623 -23.25 1.2568
2020-08-14 2020-06-30 13F MICRON TECHNOLOGY COM 595112103 470,952 11,455 2.49 24,263 25.55 1.7589
2020-05-15 2020-03-31 13F MICRON TECHNOLOGY COM 595112103 459,497 98,930 27.44 19,326 -0.34 1.5693
2020-02-14 2019-12-31 13F MICRON TECHNOLOGY COM 595112103 360,567 -2,135 -0.59 19,391 24.77 1.3410
2019-11-14 2019-09-30 13F MICRON TECHNOLOGY COM 595112103 362,702 55,500 18.07 15,542 31.10 1.1333
2019-08-14 2019-06-30 13F MICRON TECHNOLOGY COM 595112103 307,202 5,192 1.72 11,855 -5.02 0.8374
2019-05-15 2019-03-31 13F MICRON TECHNOLOGY COM 595112103 302,010 302,010 -1.69 12,482 5.29 0.7809
2013-11-14 2013-09-30 13F MICRON TECHNOLOGY COM 595112103 0 -2,000 -100.00 0 -100.00
2013-08-15 2013-06-30 13F MICRON TECHNOLOGY COM 595112103 2,000 2,000 29 0.0011
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.