Vicor Corporation
DE ˙ DB ˙ US9258151029
284,20 € ↑14,30 (5,30%)
2026-06-05
DEL PRIS
SecurityDE:VCV / Vicor Corporation
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership47,300 shares
Latest Disclosed Value $ 7,615,300
Renaissance Technologies Llc reports 363.73% increase in ownership of VCV / Vicor Corporation

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 47,300 shares of Vicor Corporation (DE:VCV) valued at $5,884,120 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 10,200 shares of Vicor Corporation. This represents a change in shares of 363.73% during the quarter. The current value of the position is $13,442,660 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)
2026-05-14 2026-03-31 13F VICOR COM 925815102 47,300 37,100 363.73 7,615 581.74 0.0119
2026-02-12 2025-12-31 13F VICOR COM 925815102 10,200 10,200 1,118 0.0017
2025-05-14 2025-03-31 13F VICOR COM 925815102 0 -12,500 -100.00 0 -100.00
2025-02-13 2024-12-31 13F VICOR COM 925815102 12,500 -34,000 -73.12 604 -69.14 0.0009
2024-11-13 2024-09-30 13F VICOR COM 925815102 46,500 -30,300 -39.45 1,958 -23.13 0.0029
2024-08-09 2024-06-30 13F VICOR COM 925815102 76,800 -71,632 -48.26 2,547 50,820.00 0.0043
2024-05-13 2024-03-31 13F VICOR COM 925815102 148,432 -75,368 -33.68 6 -50.00 0.0089
2024-02-13 2023-12-31 13F VICOR COM 925815102 223,800 -32,000 -12.51 10 -33.33 0.0156
2023-11-14 2023-09-30 13F VICOR COM 925815102 255,800 190,500 291.73 15 400.00 0.0257
2023-08-11 2023-06-30 13F VICOR COM 925815102 65,300 -73,100 -52.82 4 -50.00 0.0051
2023-05-12 2023-03-31 13F VICOR COM 925815102 138,400 125,400 964.62 6 0.0086
2023-02-13 2022-12-31 13F VICOR COM 925815102 13,000 13,000 1 0.0010
2022-08-12 2022-06-30 13F VICOR COM 925815102 0 -76,300 -100.00 0 -100.00
2022-05-13 2022-03-31 13F VICOR COM 925815102 76,300 76,300 5,383 0.0063
2020-02-12 2019-12-31 13F VICOR COM 925815102 0 -105,100 -100.00 0 -100.00
2019-11-13 2019-09-30 13F VICOR COM 925815102 105,100 -2,000 -1.87 3,103 -6.68 0.0026
2019-08-12 2019-06-30 13F VICOR COM 925815102 107,100 107,100 1.90 3,325 7.15 0.0029
2019-05-14 2019-03-31 13F VICOR COM 925815102 0 -33,300 -100.00 0 -100.00
2019-02-12 2018-12-31 13F VICOR COM 925815102 33,300 -12,500 -27.29 1,258 -40.29 0.0014
2018-11-13 2018-09-30 13F VICOR COM 925815102 45,800 27,000 143.62 2,107 157.26 0.0022
2018-08-13 2018-06-30 13F/A-1 VICOR COM 925815102 18,800 -189,200 -90.96 819 -86.21 0.0009
2018-08-13 2018-06-30 13F VICOR COM 925815102 208,000 5,938
2018-05-14 2018-03-31 13F VICOR COM 925815102 208,000 21,100 11.29 5,938 52.02 0.0065
2018-02-13 2017-12-31 13F VICOR COM 925815102 186,900 -20,600 -9.93 3,906 -20.24 0.0043
2017-11-13 2017-09-30 13F VICOR COM 925815102 207,500 -6,300 -2.95 4,897 27.96 0.0058
2017-08-11 2017-06-30 13F VICOR COM 925815102 213,800 -17,400 -7.53 3,827 2.82 0.0049
2017-05-12 2017-03-31 13F VICOR COM 925815102 231,200 -24,000 -9.40 3,722 -3.43 0.0052
2017-02-13 2016-12-31 13F VICOR COM 925815102 255,200 -9,000 -3.41 3,854 25.74 0.0061
2016-11-14 2016-09-30 13F VICOR COM 925815102 264,200 16,300 6.58 3,065 22.80 0.0054
2016-08-12 2016-06-30 13F VICOR COM 925815102 247,900 18,400 8.02 2,496 3.78 0.0048
2016-05-13 2016-03-31 13F VICOR COM 925815102 229,500 5,200 2.32 2,405 17.55 0.0046
2016-02-11 2015-12-31 13F VICOR COM 925815102 224,300 52,000 30.18 2,046 16.45 0.0045
2015-11-12 2015-09-30 13F VICOR COM 925815102 172,300 55,100 47.01 1,757 22.95 0.0042
2015-08-14 2015-06-30 13F VICOR COM 925815102 117,200 43,400 58.81 1,429 27.36 0.0033
2015-05-13 2015-03-31 13F VICOR COM 925815102 73,800 22,800 44.71 1,122 81.85 0.0024
2015-02-13 2014-12-31 13F VICOR COM 925815102 51,000 -41,900 -45.10 617 -29.32 0.0015
2014-11-12 2014-09-30 13F VICOR COM 925815102 92,900 -29,800 -24.29 873 -15.08 0.0024
2014-08-13 2014-06-30 13F VICOR COM 925815102 122,700 -13,906 -10.18 1,028 -26.20 0.0024
2014-05-14 2014-03-31 13F VICOR COM 925815102 136,606 -22,894 -14.35 1,393 -34.91 0.0033
2014-02-14 2013-12-31 13F VICOR COM 925815102 159,500 -31,600 -16.54 2,140 36.92 0.0051
2013-11-13 2013-09-30 13F VICOR COM 925815102 191,100 -58,300 -23.38 1,563 -8.49 0.0038
2013-08-12 2013-06-30 13F VICOR COM 925815102 249,400 249,400 1,708 0.0045
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.