CSP Inc.
US ˙ NasdaqGM ˙ US1263891053

SecurityCSPI / CSP Inc.
InstitutionVanguard Group Inc
Latest Disclosed Ownership445,458 shares
Latest Disclosed Value $ 5,568,226
Vanguard Group Inc reports 0.20% increase in ownership of CSPI / CSP Inc.

On January 29, 2026 - Vanguard Group Inc filed a 13F-HR form disclosing ownership of 445,458 shares of CSP Inc. (US:CSPI) valued at $5,568,225 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 7, 2025 disclosing 444,562 shares of CSP Inc.. This represents a change in shares of 0.20% during the quarter. The current value of the position is $3,964,576 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)
2026-01-29 2025-12-31 13F CSP COM 126389105 445,458 896 0.20 5,568 8.45 0.0001
2025-11-07 2025-09-30 13F CSP COM 126389105 444,562 -3,527 -0.79 5,135 -11.45 0.0001
2025-08-11 2025-06-30 13F CSP COM 126389105 448,089 47,574 11.88 5,798 -5.62 0.0001
2025-05-09 2025-03-31 13F CSP COM 126389105 400,515 -2,641 -0.66 6,144 -5.17 0.0001
2025-02-11 2024-12-31 13F CSP COM 126389105 403,156 -997 -0.25 6,479 23.41 0.0001
2024-11-13 2024-09-30 13F CSP COM 126389105 404,153 0 0.00 5,250 -12.82 0.0001
2024-08-13 2024-06-30 13F CSP COM 126389105 404,153 -5,413 -1.32 6,022 -20.36 0.0001
2024-05-10 2024-03-31 13F CSP COM 126389105 409,566 207,253 102.44 7,561 91.73 0.0001
2024-03-11 2023-12-31 13F/A-1 CSP COM 126389105 202,313 -841 -0.41 3,943 10.91 0.0001
2024-02-14 2023-12-31 13F CSP COM 126389105 202,313 -841 3,943 0.0001
2023-12-18 2023-09-30 13F/A-1 CSP COM 126389105 203,154 -500 -0.25 3,555 46.60 0.0001
2023-11-14 2023-09-30 13F CSP COM 126389105 203,154 -500 3,555 0.0000
2023-08-14 2023-06-30 13F CSP COM 126389105 203,654 2,964 1.48 2,426 -11.07 0.0001
2023-07-14 2023-03-31 13F/A-1 CSP COM 126389105 200,690 9,652 5.05 2,727 51.42 0.0001
2023-05-15 2023-03-31 13F CSP COM 126389105 200,690 9,652 2,727 0.0000
2023-02-10 2022-12-31 13F CSP COM 126389105 191,038 15 0.01 1,801 31.17 0.0000
2022-11-14 2022-09-30 13F CSP COM 126389105 191,023 -4,675 -2.39 1,373 -22.91 0.0000
2022-08-12 2022-06-30 13F CSP COM 126389105 195,698 0 0.00 1,781 15.50 0.0001
2022-05-13 2022-03-31 13F CSP COM 126389105 195,698 0 0.00 1,542 -10.40 0.0000
2022-02-14 2021-12-31 13F CSP COM 126389105 195,698 -179 -0.09 1,721 -1.60 0.0000
2021-11-12 2021-09-30 13F CSP COM 126389105 195,877 0 0.00 1,749 -15.43 0.0000
2021-08-13 2021-06-30 13F CSP COM 126389105 195,877 -1,300 -0.66 2,068 20.51 0.0001
2021-05-14 2021-03-31 13F CSP COM 126389105 197,177 0 0.00 1,716 12.60 0.0000
2021-02-12 2020-12-31 13F CSP COM 126389105 197,177 0 0.00 1,524 -10.46 0.0000
2020-11-16 2020-09-30 13F CSP COM 126389105 197,177 -3,799 -1.89 1,702 2.47 0.0001
2020-08-14 2020-06-30 13F CSP COM 126389105 200,976 0 0.00 1,661 18.22 0.0001
2020-05-15 2020-03-31 13F CSP COM 126389105 200,976 82,341 69.41 1,405 -9.24 0.0001
2020-02-14 2019-12-31 13F CSP COM 126389105 118,635 0 0.00 1,548 -3.25 0.0001
2019-11-14 2019-09-30 13F CSP COM 126389105 118,635 0 0.00 1,600 -11.55 0.0001
2019-08-14 2019-06-30 13F CSP COM 126389105 118,635 0 0.00 1,809 41.11 0.0001
2019-05-15 2019-03-31 13F CSP COM 126389105 118,635 404 0.34 1,282 11.00 0.0001
2019-02-14 2018-12-31 13F CSP COM 126389105 118,231 2,300 1.98 1,155 -24.06 0.0001
2018-12-13 2018-09-30 13F/A-2 CSP COM 126389105 115,931 -1,116 -0.95 1,521 31.92 0.0001
2018-11-23 2018-09-30 13F/A-1 CSP COM 126389105 115,931 0 1,521 0.0001
2018-11-14 2018-09-30 13F CSP COM 126389105 115,931 -1,116 1,521
2018-08-14 2018-06-30 13F CSP COM 126389105 117,047 3,226 2.83 1,153 -5.80 0.0000
2018-05-15 2018-03-31 13F CSP COM 126389105 113,821 12,564 12.41 1,224 -23.93 0.0001
2018-02-14 2017-12-31 13F CSP COM 126389105 101,257 1,116 1.11 1,609 46.54 0.0001
2017-11-14 2017-09-30 13F CSP COM 126389105 100,141 0 0.00 1,098 1.95 0.0001
2017-08-24 2017-06-30 13F/A-1 CSP COM 126389105 100,141 0 0.00 1,077 4.36 0.0001
2017-08-11 2017-06-30 13F CSP COM 126389105 100,141 0 1,077
2017-05-12 2017-03-31 13F CSP COM 126389105 100,141 1,100 1.11 1,032 -1.53 0.0001
2017-02-14 2016-12-31 13F CSP COM 126389105 99,041 13,733 16.10 1,048 20.74 0.0001
2016-11-14 2016-09-30 13F CSP COM 126389105 85,308 6,000 7.57 868 34.78 0.0001
2016-08-10 2016-06-30 13F CSP COM 126389105 79,308 825 1.05 644 36.73 0.0000
2016-05-13 2016-03-31 13F CSP COM 126389105 78,483 0 0.00 471 -13.58 0.0000
2016-02-08 2015-12-31 13F CSP COM 126389105 78,483 0 0.00 545 29.45 0.0000
2015-11-12 2015-09-30 13F/A-1 CSP COM 126389105 78,483 0 0.00 421 -22.75 0.0000
2015-11-12 2015-09-30 13F/A-1 CSP COM 126389105 78,483 0 421 0.0000
2015-11-12 2015-09-30 13F CSP COM 126389105 2,290,306 78,879
2015-08-13 2015-06-30 13F CSP COM 126389105 78,483 772 0.99 545 3.42 0.0000
2015-05-15 2015-03-31 13F/A-1 CSP COM 126389105 77,711 0 0.00 527 -8.35 0.0000
2015-05-14 2015-03-31 13F CSP COM 126389105 77,711 527
2015-02-12 2014-12-31 13F CSP COM 126389105 77,711 1,100 1.44 575 -5.89 0.0000
2014-11-12 2014-09-30 13F CSP COM 126389105 76,611 200 0.26 611 15.50 0.0000
2014-08-11 2014-06-30 13F CSP COM 126389105 76,411 0 0.00 529 -11.24 0.0000
2014-05-13 2014-03-31 13F CSP COM 126389105 76,411 0 0.00 596 -3.40 0.0001
2014-02-12 2013-12-31 13F CSP COM 126389105 76,411 7,102 10.25 617 25.92 0.0001
2013-11-07 2013-09-30 13F CSP COM 126389105 69,309 31,439 83.02 490 45.83 0.0000
2013-08-13 2013-06-30 13F CSP COM 126389105 37,870 37,870 336 0.0000
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.