Accuray Incorporated
US ˙ NasdaqGS ˙ US0043971052

SecurityARAY / Accuray Incorporated
InstitutionAlliancebernstein L.p.
Latest Disclosed Ownership54,730 shares
Latest Disclosed Value $ 45,130
Alliancebernstein L.p. ownership in ARAY / Accuray Incorporated

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 54,730 shares of Accuray Incorporated (US:ARAY) valued at $21,241 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 54,730 shares of Accuray Incorporated. This represents a change in shares of 0.00% during the quarter. The current value of the position is $20,228 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 ACCURAY INC DEL COM 004397105 54,730 0 0.00 45 0.00 0.0000
2026-02-17 2025-12-31 13F ACCURAY COM 004397105 54,730 0 0.00 45 -50.55 0.0000
2025-11-14 2025-09-30 13F ACCURAY COM 004397105 54,730 0 0.00 91 22.97 0.0000
2025-08-14 2025-06-30 13F ACCURAY COM 004397105 54,730 23,800 76.95 75 34.55 0.0000
2025-05-15 2025-03-31 13F ACCURAY COM 004397105 30,930 0 0.00 55 -9.84 0.0000
2025-02-12 2024-12-31 13F ACCURAY COM 004397105 30,930 0 0.00 61 10.91 0.0000
2024-11-14 2024-09-30 13F ACCURAY COM 004397105 30,930 0 0.00 56 -1.79 0.0000
2024-08-14 2024-06-30 13F ACCURAY COM 004397105 30,930 15,410 99.29 56 47.37 0.0000
2024-05-14 2024-03-31 13F ACCURAY COM 004397105 15,520 0 0.00 38 -11.63 0.0000
2024-02-14 2023-12-31 13F ACCURAY COM 004397105 15,520 0 0.00 44 2.38 0.0000
2023-11-14 2023-09-30 13F ACCURAY COM 004397105 15,520 3,880 33.33 42 -6.67 0.0000
2023-08-15 2023-06-30 13F ACCURAY COM 004397105 11,640 11,640 45 0.0000
2022-08-15 2022-06-30 13F ACCURAY COM 004397105 0 -111,431 -100.00 0 -100.00
2022-05-13 2022-03-31 13F ACCURAY COM 004397105 111,431 400 0.36 369 -30.38 0.0001
2022-02-14 2021-12-31 13F ACCURAY COM 004397105 111,031 -25,400 -18.62 530 -1.67 0.0002
2021-11-10 2021-09-30 13F ACCURAY COM 004397105 136,431 0 0.00 539 -12.64 0.0002
2021-07-30 2021-06-30 13F ACCURAY COM 004397105 136,431 0 0.00 617 -8.59 0.0002
2021-05-06 2021-03-31 13F ACCURAY COM 004397105 136,431 0 0.00 675 18.63 0.0003
2021-02-08 2020-12-31 13F ACCURAY COM 004397105 136,431 -27,700 -16.88 569 44.42 0.0003
2020-11-12 2020-09-30 13F ACCURAY COM 004397105 164,131 0 0.00 394 18.32 0.0002
2020-08-13 2020-06-30 13F ACCURAY COM 004397105 164,131 18,300 12.55 333 20.22 0.0002
2020-05-14 2020-03-31 13F ACCURAY COM 004397105 145,831 7,400 5.35 277 -28.97 0.0002
2020-02-18 2019-12-31 13F ACCURAY COM 004397105 138,431 -2,460 -1.75 390 0.00 0.0002
2019-11-14 2019-09-30 13F ACCURAY COM 004397105 140,891 0 0.00 390 -28.44 0.0002
2019-08-14 2019-06-30 13F ACCURAY COM 004397105 140,891 8,400 6.34 545 -13.77 0.0003
2019-05-14 2019-03-31 13F ACCURAY COM 004397105 132,491 0 0.00 632 39.82 0.0004
2019-02-13 2018-12-31 13F ACCURAY COM 004397105 132,491 10,700 8.79 452 -17.52 0.0003
2018-11-08 2018-09-30 13F ACCURAY COM 004397105 121,791 -3,300 -2.64 548 6.82 0.0004
2018-08-13 2018-06-30 13F ACCURAY COM 004397105 125,091 12,800 11.40 513 -8.56 0.0004
2018-05-14 2018-03-31 13F ACCURAY COM 004397105 112,291 15,400 15.89 561 34.53 0.0004
2018-02-13 2017-12-31 13F ACCURAY COM 004397105 96,891 0 0.00 417 7.47 0.0003
2017-11-13 2017-09-30 13F ACCURAY COM 004397105 96,891 0 0.00 388 -15.65 0.0003
2017-08-10 2017-06-30 13F ACCURAY COM 004397105 96,891 11,400 13.33 460 13.30 0.0004
2017-05-11 2017-03-31 13F ACCURAY COM 004397105 85,491 -7,500 -8.07 406 -5.14 0.0003
2017-02-13 2016-12-31 13F ACCURAY COM 004397105 92,991 0 0.00 428 -27.70 0.0004
2016-11-10 2016-09-30 13F ACCURAY COM 004397105 92,991 0 0.00 592 22.57 0.0005
2016-08-11 2016-06-30 13F ACCURAY COM 004397105 92,991 13,200 16.54 483 4.77 0.0004
2016-05-13 2016-03-31 13F ACCURAY COM 004397105 79,791 0 0.00 461 -14.47 0.0004
2016-02-16 2015-12-31 13F/A-1 ACCURAY COM 004397105 79,791 0 0.00 539 35.09 0.0005
2016-02-12 2015-12-31 13F ACCURAY COM 004397105 79,791 399
2015-11-13 2015-09-30 13F ACCURAY COM 004397105 79,791 -240 -0.30 399 -25.97 0.0003
2015-08-14 2015-06-30 13F ACCURAY COM 004397105 80,031 -20,400 -20.31 539 -42.29 0.0004
2015-05-13 2015-03-31 13F ACCURAY COM 004397105 100,431 -7,100 -6.60 934 15.02 0.0008
2015-02-13 2014-12-31 13F ACCURAY COM 004397105 107,531 -5,600 -4.95 812 -1.10 0.0007
2014-11-13 2014-09-30 13F ACCURAY COM 004397105 113,131 0 0.00 821 -17.57 0.0007
2014-08-13 2014-06-30 13F ACCURAY COM 004397105 113,131 0 0.00 996 -8.29 0.0008
2014-05-13 2014-03-31 13F ACCURAY COM 004397105 113,131 0 0.00 1,086 10.25 0.0009
2014-02-13 2013-12-31 13F ACCURAY COM 004397105 113,131 0 0.00 985 17.82 0.0009
2013-11-14 2013-09-30 13F ACCURAY COM 004397105 113,131 -329 -0.29 836 28.42 0.0008
2013-08-13 2013-06-30 13F ACCURAY COM 004397105 113,460 113,460 651 0.0007
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.