Vicor Corporation
US ˙ NasdaqGS ˙ US9258151029

SecurityVICR / Vicor Corporation
InstitutionBrown Advisory Inc
Latest Disclosed Ownership10,133 shares
Latest Disclosed Value $ 1,631,368
Brown Advisory Inc reports 0.10% increase in ownership of VICR / Vicor Corporation

On May 15, 2026 - Brown Advisory Inc filed a 13F-HR form disclosing ownership of 10,133 shares of Vicor Corporation (US:VICR) valued at $1,631,413 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 10,123 shares of Vicor Corporation. This represents a change in shares of 0.10% during the quarter. The current value of the position is $3,348,754 USD.

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 VICOR COM 925815102 10,133 10 0.10 1,631 47.07 0.0012
2026-02-13 2025-12-31 13F VICOR COM 925815102 10,123 -10 -0.10 1,109 120.48 0.0015
2025-11-14 2025-09-30 13F VICOR COM 925815102 10,133 0 0.00 504 9.59 0.0007
2025-08-13 2025-06-30 13F VICOR COM 925815102 10,133 23 0.23 460 -2.75 0.0006
2025-04-30 2025-03-31 13F VICOR COM 925815102 10,110 50 0.50 473 -2.88 0.0007
2025-02-14 2024-12-31 13F VICOR COM 925815102 10,060 60 0.60 486 15.44 0.0006
2024-11-13 2024-09-30 13F VICOR COM 925815102 10,000 0 0.00 421 27.19 0.0005
2024-08-14 2024-06-30 13F VICOR COM 925815102 10,000 0 0.00 332 -13.35 0.0004
2024-04-24 2024-03-31 13F VICOR COM 925815102 10,000 0 0.00 382 -14.92 0.0005
2024-02-08 2023-12-31 13F VICOR COM 925815102 10,000 0 0.00 449 -23.64 0.0006
2023-10-25 2023-09-30 13F VICOR COM 925815102 10,000 0 0.00 589 8.89 0.0010
2023-07-31 2023-06-30 13F VICOR COM 925815102 10,000 0 0.00 540 15.14 0.0008
2023-05-08 2023-03-31 13F VICOR COM 925815102 10,000 -90 -0.89 469 -13.47 0.0008
2023-02-13 2022-12-31 13F VICOR COM 925815102 10,090 0 0.00 542 -9.21 0.0010
2022-11-14 2022-09-30 13F VICOR COM 925815102 10,090 0 0.00 597 8.15 0.0012
2022-11-14 2022-06-30 13F/A-2 VICOR COM 925815102 10,090 0 0.00 552 -22.47 0.0010
2022-09-13 2022-06-30 13F/A-1 VICOR COM 925815102 10,090 0 552 0.0010
2022-08-02 2022-06-30 13F VICOR COM 925815102 11,839 0 774 0.0005
2022-11-14 2022-03-31 13F/A-2 VICOR COM 925815102 10,090 3,051 43.34 712 -20.36 0.0011
2022-09-13 2022-03-31 13F/A-1 VICOR COM 925815102 10,090 3,051 712 0.0010
2022-05-09 2022-03-31 13F VICOR COM 925815102 11,839 4,800 934 0.0013
2022-01-27 2021-12-31 13F VICOR COM 925815102 7,039 1,749 33.06 894 25.92 0.0011
2021-11-12 2021-09-30 13F VICOR COM 925815102 5,290 0 0.00 710 27.01 0.0010
2021-07-29 2021-06-30 13F VICOR COM 925815102 5,290 -90 -1.67 559 22.32 0.0008
2021-05-14 2021-03-31 13F VICOR COM 925815102 5,380 -9 -0.17 457 -8.05 0.0008
2021-02-12 2020-12-31 13F VICOR COM 925815102 5,389 -133 -2.41 497 15.85 0.0009
2020-11-16 2020-09-30 13F VICOR COM 925815102 5,522 322 6.19 429 14.71 0.0009
2020-08-14 2020-06-30 13F VICOR COM 925815102 5,200 0 0.00 374 61.21 0.0009
2020-05-15 2020-03-31 13F VICOR COM 925815102 5,200 0 0.00 232 -4.53 0.0007
2020-02-14 2019-12-31 13F VICOR COM 925815102 5,200 -5,000 -49.02 243 -19.27 0.0006
2019-11-14 2019-09-30 13F VICOR COM 925815102 10,200 0 0.00 301 -5.05 0.0008
2019-08-12 2019-06-30 13F VICOR COM 925815102 10,200 0 0.00 317 0.32 0.0009
2019-05-15 2019-03-31 13F VICOR COM 925815102 10,200 0 0.00 316 -17.92 0.0009
2019-02-13 2018-12-31 13F VICOR COM 925815102 10,200 0 0.00 385 -17.91 0.0013
2018-11-13 2018-09-30 13F VICOR COM 925815102 10,200 0 0.00 469 5.63 0.0013
2018-08-10 2018-06-30 13F VICOR COM 925815102 10,200 -5,000 -32.89 444 2.30 0.0014
2018-06-28 2018-03-31 13F/A-1 VICOR COM 925815102 15,200 0 0.00 434 36.48 0.0014
2018-05-14 2018-03-31 13F VICOR COM 925815102 10,000 -5,200 285
2018-02-12 2017-12-31 13F VICOR COM 925815102 15,200 -5,000 -24.75 318 -33.33 0.0010
2017-11-13 2017-09-30 13F VICOR COM 925815102 20,200 0 0.00 477 31.77 0.0016
2017-08-14 2017-06-30 13F VICOR COM 925815102 20,200 0 0.00 362 11.38 0.0011
2017-05-15 2017-03-31 13F VICOR COM 925815102 20,200 0 0.00 325 6.56 0.0011
2017-02-13 2016-12-31 13F VICOR COM 925815102 20,200 -5,000 -19.84 305 4.45 0.0011
2016-11-14 2016-09-30 13F VICOR COM 925815102 25,200 0 0.00 292 14.96 0.0010
2016-08-09 2016-06-30 13F VICOR COM 925815102 25,200 0 0.00 254 -3.79 0.0009
2016-05-13 2016-03-31 13F VICOR COM 925815102 25,200 25,200 264 0.0009
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.