IPG光子公司
MX ˙ BMV ˙ US44980X1090
SecurityMX:IPGP / IPG Photonics Corporation
InstitutionAmerican Capital Management Inc
Latest Disclosed Ownership208,918 shares
Latest Disclosed Value $ 23,939,914
American Capital Management Inc reports 11.31% decrease in ownership of IPGP / IPG Photonics Corporation

On May 15, 2026 - American Capital Management Inc filed a 13F-HR form disclosing ownership of 208,918 shares of IPG Photonics Corporation (MX:IPGP) valued at $23,939,914 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 235,554 shares of IPG Photonics Corporation. This represents a change in shares of -11.31% during the quarter.

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 IPG PHOTONICS COM 44980X109 208,918 -26,636 -11.31 23,940 41.94 1.2858
2026-02-17 2025-12-31 13F IPG PHOTONICS COM 44980X109 235,554 121,426 106.39 16,866 86.62 0.7441
2025-11-14 2025-09-30 13F IPG PHOTONICS COM 44980X109 114,128 114,128 9,038 0.3601
2024-11-14 2024-09-30 13F IPG Photonic COM 44980X109 0 -35,120 -100.00 0 -100.00
2024-08-14 2024-06-30 13F IPG Photonic COM 44980X109 35,120 -705 -1.97 2,964 -8.77 0.0992
2024-05-15 2024-03-31 13F IPG Photonic COM 44980X109 35,825 -1,310 -3.53 3,249 -19.40 0.1041
2024-02-14 2023-12-31 13F IPG Photonic COM 44980X109 37,135 11,220 43.30 4,031 53.17 0.1379
2023-11-14 2023-09-30 13F IPG Photonic COM 44980X109 25,915 6,550 33.82 2,631 0.04 0.1014
2023-08-14 2023-06-30 13F IPG Photonic COM 44980X109 19,365 19,365 2,630 0.0913
2022-05-16 2022-03-31 13F IPG Photonic COM 44980X109 0 -129,866 -100.00 0 -100.00
2022-02-14 2021-12-31 13F IPG Photonic COM 44980X109 129,866 34 0.03 22,355 8.70 0.5740
2021-11-15 2021-09-30 13F IPG Photonic COM 44980X109 129,832 165 0.13 20,565 -24.75 0.5523
2021-08-13 2021-06-30 13F IPG Photonic COM 44980X109 129,667 3,220 2.55 27,330 2.46 0.7653
2021-05-17 2021-03-31 13F IPG Photonic COM 44980X109 126,447 -1,223 -0.96 26,673 -6.64 0.8064
2021-02-16 2020-12-31 13F IPG Photonic COM 44980X109 127,670 201 0.16 28,571 31.87 0.8543
2020-11-16 2020-09-30 13F IPG Photonic COM 44980X109 127,469 -5,750 -4.32 21,666 1.40 0.7962
2020-08-13 2020-06-30 13F IPG Photonic COM 44980X109 133,219 -890 -0.66 21,367 44.47 0.7858
2020-05-15 2020-03-31 13F IPG Photonic COM 44980X109 134,109 250 0.19 14,790 -23.76 0.7196
2020-02-12 2019-12-31 13F IPG Photonic COM 44980X109 133,859 240 0.18 19,399 7.06 0.8133
2019-11-14 2019-09-30 13F IPG Photonic COM 44980X109 133,619 -3,130 -2.29 18,119 -14.10 0.8022
2019-11-14 2019-06-30 13F/A-1 IPG Photonic COM 44980X109 136,749 4,200 3.17 21,094 4.85 0.9026
2019-08-12 2019-06-30 13F IPG Photonic COM 44980X109 136,749 4,200 21,094
2019-05-14 2019-03-31 13F IPG Photonic COM 44980X109 132,549 1,362 1.04 20,118 35.37 0.9328
2019-02-08 2018-12-31 13F IPG Photonic COM 44980X109 131,187 885 0.68 14,862 -26.92 0.7932
2018-11-02 2018-09-30 13F IPG Photonic COM 44980X109 130,302 -130 -0.10 20,336 -29.33 0.8890
2018-07-17 2018-06-30 13F IPG Photonic COM 44980X109 130,432 682 0.53 28,777 -4.97 1.4859
2018-04-23 2018-03-31 13F IPG Photonic COM 44980X109 129,750 -12,155 -8.57 30,281 -0.35 1.7251
2018-04-05 2017-12-31 13F/A-1 IPG Photonic COM 44980X109 141,905 -510 -0.36 30,386 15.30 1.8281
2018-01-23 2017-12-31 13F IPG Photonic COM 44980X109 141,905 -510 30,386
2018-04-05 2017-09-30 13F/A-1 IPG Photonic COM 44980X109 142,415 -720 -0.50 26,355 26.90 1.6472
2017-10-20 2017-09-30 13F IPG Photonic COM 44980X109 142,245 -440 26,324
2018-04-19 2017-06-30 13F/A-1 IPG Photonic COM 44980X109 143,135 -675 -0.47 20,769 19.65 1.3398
2017-07-27 2017-06-30 13F IPG Photonic COM 44980X109 142,685 -1,125 20,704
2018-04-18 2017-03-31 13F/A-1 IPG Photonic COM 44980X109 143,810 -1,010 -0.70 17,358 21.43 1.2253
2017-04-24 2017-03-31 13F IPG Photonic COM 44980X109 143,360 -1,460 17,304
2017-02-16 2016-12-31 13F/A-1 IPG Photonic COM 44980X109 144,820 -1,125 -0.77 14,295 18.94 1.1067
2017-02-09 2016-12-31 13F IPG Photonic COM 44980X109 144,820 14,295
2016-10-26 2016-09-30 13F IPG Photonic COM 44980X109 145,945 -1,750 -1.18 12,019 1.72 0.9234
2016-08-03 2016-06-30 13F IPG Photonic COM 44980X109 147,695 2,390 1.64 11,816 -15.36 0.9773
2016-04-25 2016-03-31 13F IPG Photonic COM 44980X109 145,305 1,390 0.97 13,961 8.81 1.2192
2016-02-10 2015-12-31 13F IPG Photonic COM 44980X109 143,915 83,915 139.86 12,831 181.51 1.1388
2015-11-03 2015-09-30 13F IPG Photonic COM 44980X109 60,000 10,000 20.00 4,558 7.02 0.4726
2015-07-21 2015-06-30 13F IPG Photonic COM 44980X109 50,000 0 0.00 4,259 -8.11 0.4056
2015-04-16 2015-03-31 13F/A-1 IPG Photonic COM 44980X109 50,000 15,000 4,635 0.4492
2015-04-21 2015-03-31 13F/A-2 IPG Photonic COM 44980X109 50,000 15,000 42.86 4,635 76.77 0.4560
2015-02-06 2014-12-31 13F IPG Photonic COM 44980X109 35,000 20,000 133.33 2,622 154.07 0.2846
2014-10-14 2014-09-30 13F IPG Photonic COM 44980X109 15,000 0 0.00 1,032 0.00 0.1201
2014-07-16 2014-06-30 13F IPG Photonic COM 44980X109 15,000 15,000 1,032 0.1160
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.