Calix, Inc.
US ˙ NYSE ˙ US13100M5094

SecurityCALX / Calix, Inc.
InstitutionSquarepoint Ops LLC
Latest Disclosed Ownership458,802 shares
Latest Disclosed Value $ 22,476,710
Squarepoint Ops LLC reports 259.07% increase in ownership of CALX / Calix, Inc.

On May 15, 2026 - Squarepoint Ops LLC filed a 13F-HR form disclosing ownership of 458,802 shares of Calix, Inc. (US:CALX) valued at $22,476,710 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 127,775 shares of Calix, Inc.. This represents a change in shares of 259.07% during the quarter. The current value of the position is $17,663,877 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 CALIX COM 13100M509 458,802 331,027 259.07 22,477 232.34 0.0264
2026-02-13 2025-12-31 13F CALIX COM 13100M509 127,775 127,775 6,763 0.0072
2025-11-14 2025-09-30 13F CALIX COM 13100M509 0 -22,243 -100.00 0 -100.00
2025-08-27 2025-06-30 13F/A-1 CALIX COM 13100M509 22,243 -16,176 -42.10 1,183 -13.08 0.0012
2025-08-14 2025-06-30 13F CALIX COM 13100M509 22,243 -16,176 1,183 0.0012
2025-08-27 2025-03-31 13F/A-1 CALIX COM 13100M509 38,419 -108,033 -73.77 1,362 -73.35 0.0017
2025-05-15 2025-03-31 13F CALIX COM 13100M509 38,419 -108,033 1,362 0.0017
2025-02-14 2024-12-31 13F CALIX COM 13100M509 146,452 25,352 20.93 5,107 8.71 0.0050
2024-11-14 2024-09-30 13F CALIX COM 13100M509 121,100 -179,246 -59.68 4,697 -55.86 0.0073
2024-08-14 2024-06-30 13F CALIX COM 13100M509 300,346 135,916 82.66 10,641 95.18 0.0176
2024-05-15 2024-03-31 13F CALIX COM 13100M509 164,430 -22,627 -12.10 5,452 -33.28 0.0094
2024-02-14 2023-12-31 13F CALIX COM 13100M509 187,057 32,266 20.84 8,173 15.18 0.0155
2023-11-14 2023-09-30 13F CALIX COM 13100M509 154,791 -60,462 -28.09 7,096 -33.96 0.0175
2023-08-14 2023-06-30 13F CALIX COM 13100M509 215,253 11,934 5.87 10,743 -1.40 0.0329
2023-05-15 2023-03-31 13F CALIX COM 13100M509 203,319 24,522 13.71 10,896 -10.95 0.0444
2023-02-14 2022-12-31 13F CALIX COM 13100M509 178,797 127,857 251.00 12,235 292.90 0.0484
2022-11-14 2022-09-30 13F CALIX COM 13100M509 50,940 -69,074 -57.55 3,114 -23.99 0.0157
2022-08-15 2022-06-30 13F CALIX COM 13100M509 120,014 120,014 4,097 0.0228
2022-05-16 2022-03-31 13F CALIX COM 13100M509 0 -46,125 -100.00 0 -100.00
2022-02-14 2021-12-31 13F CALIX COM 13100M509 46,125 46,125 3,689 0.0098
2021-11-15 2021-09-30 13F CALIX COM 13100M509 0 -9,578 -100.00 0 -100.00
2021-08-16 2021-06-30 13F CALIX COM 13100M509 9,578 -1,421 -12.92 455 19.42 0.0017
2021-05-17 2021-03-31 13F CALIX COM 13100M509 10,999 -70,396 -86.49 381 -84.27 0.0022
2021-02-16 2020-12-31 13F CALIX COM 13100M509 81,395 -39,479 -32.66 2,422 12.70 0.0181
2020-11-16 2020-09-30 13F CALIX COM 13100M509 120,874 94,037 350.40 2,149 437.25 0.0290
2020-08-14 2020-06-30 13F CALIX COM 13100M509 26,837 -98,073 -78.51 400 -54.75 0.0065
2020-05-15 2020-03-31 13F CALIX COM 13100M509 124,910 -55,039 -30.59 884 -38.61 0.0226
2020-02-14 2019-12-31 13F CALIX COM 13100M509 179,949 -111,904 -38.34 1,440 -22.79 0.0086
2019-11-14 2019-09-30 13F CALIX COM 13100M509 291,853 -79,189 -21.34 1,865 -23.38 0.0166
2019-08-14 2019-06-30 13F CALIX COM 13100M509 371,042 197,483 113.78 2,434 82.19 0.0237
2019-05-15 2019-03-31 13F CALIX COM 13100M509 173,559 91,964 112.71 1,336 67.84 0.0141
2019-02-14 2018-12-31 13F CALIX COM 13100M509 81,595 20,074 32.63 796 59.84 0.0093
2018-11-14 2018-09-30 13F CALIX COM 13100M509 61,521 61,521 498 0.0060
2018-05-15 2018-03-31 13F CALIX COM 13100M509 0 -34,063 -100.00 0 -100.00
2018-02-14 2017-12-31 13F CALIX COM 13100M509 34,063 14,390 73.15 203 105.05 0.0035
2017-11-14 2017-09-30 13F CALIX COM 13100M509 19,673 19,673 99 0.0019
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.