Coherent Corp.
US ˙ NYSE ˙ US19247G1076

SecurityCOHR / Coherent Corp.
InstitutionAmerican Trust
Latest Disclosed Ownership1,015 shares
Latest Disclosed Value $ 241,783
American Trust reports 33.09% decrease in ownership of COHR / Coherent Corp.

On May 1, 2026 - American Trust filed a 13F-HR form disclosing ownership of 1,015 shares of Coherent Corp. (US:COHR) valued at $241,783 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 14, 2026 disclosing 1,517 shares of Coherent Corp.. This represents a change in shares of -33.09% during the quarter. The current value of the position is $423,691 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)
2026-05-01 2026-03-31 13F COHERENT Equities 19247G107 1,015 -502 -33.09 242 -13.62 0.0214
2026-02-14 2025-12-31 13F COHERENT Equities 19247G107 1,517 -788 -34.19 280 12.50 0.0235
2025-11-17 2025-09-30 13F COHERENT Equities 19247G107 2,305 2,305 248 0.0210
2025-02-18 2024-12-31 13F COHERENT Equities 19247G107 0 -2,737 -100.00 0 -100.00
2024-11-29 2024-09-30 13F COHERENT Equities 19247G107 2,737 -286 -9.46 243 10.96 0.0201
2024-09-12 2024-06-30 13F COHERENT Equities 19247G107 3,023 -985 -24.58 219 -9.50 0.0179
2024-06-11 2024-03-31 13F COHERENT Equities 19247G107 4,008 4,008 243 0.0203
2023-11-15 2023-09-30 13F COHERENT Equities 19247G107 0 -6,021 -100.00 0 -100.00
2023-08-14 2023-06-30 13F COHERENT Equities 19247G107 6,021 667 12.46 307 50.74 0.0213
2023-05-22 2023-03-31 13F COHERENT Equities 19247G107 5,354 5,354 204 0.0141
2023-02-16 2022-12-31 13F COHERENT Equities 19247G107 0 -6,045 -100.00 0 -100.00
2022-12-02 2022-09-30 13F COHERENT Equities 19247G107 6,045 6,045 211 0.0178
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.