Coherent Corp.
MX ˙ BMV ˙ US19247G1076
SecurityMX:COHR / Coherent Corp.
InstitutionParthenon Llc
Latest Disclosed Ownership4,900 shares
Latest Disclosed Value $ 1,167,229
Parthenon Llc ownership in COHR / Coherent Corp.

On April 28, 2026 - Parthenon Llc filed a 13F-HR form disclosing ownership of 4,900 shares of Coherent Corp. (MX:COHR) valued at $1,167,229 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 4,900 shares of Coherent Corp.. This represents a change in shares of 0.00% 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)
2026-04-28 2026-03-31 13F COHERENT COM 19247G107 4,900 0 0.00 1,167 29.09 0.1334
2026-01-23 2025-12-31 13F COHERENT COM 19247G107 4,900 -140 -2.78 904 66.79 0.0976
2025-10-31 2025-09-30 13F COHERENT COM 19247G107 5,040 -60 -1.18 543 19.38 0.0602
2025-07-29 2025-06-30 13F COHERENT COM 19247G107 5,100 0 0.00 455 37.16 0.0520
2025-05-02 2025-03-31 13F COHERENT COM 19247G107 5,100 0 0.00 331 -31.47 0.0407
2025-02-03 2024-12-31 13F COHERENT COM 19247G107 5,100 -300 -5.56 483 0.63 0.0584
2024-11-05 2024-09-30 13F COHERENT COM 19247G107 5,400 0 0.00 480 22.76 0.0573
2024-08-08 2024-06-30 13F COHERENT COM 19247G107 5,400 -150 -2.70 391 16.37 0.0497
2024-04-30 2024-03-31 13F COHERENT COM 19247G107 5,550 0 0.00 336 39.42 0.0427
2024-02-05 2023-12-31 13F COHERENT COM 19247G107 5,550 5,550 242 0.0334
2023-10-27 2023-09-30 13F COHERENT COM 19247G107 0 -5,550 -100.00 0 -100.00
2023-07-27 2023-06-30 13F COHERENT COM 19247G107 5,550 0 0.00 283 33.65 0.0409
2023-05-08 2023-03-31 13F COHERENT COM 19247G107 5,550 5,550 211 0.0323
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.