Coherent Corp.
MX ˙ BMV ˙ US19247G1076
SecurityMX:COHR / Coherent Corp.
InstitutionRhumbline Advisers
Latest Disclosed Ownership311,572 shares
Latest Disclosed Value $ 74,219,473
Rhumbline Advisers reports 22.51% decrease in ownership of COHR / Coherent Corp.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 311,572 shares of Coherent Corp. (MX:COHR) valued at $74,219,473 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 402,106 shares of Coherent Corp.. This represents a change in shares of -22.51% 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)
2026-05-12 2026-03-31 13F COHERENT COM 19247G107 311,572 -90,534 -22.51 74,219 0.00 0.0635
2026-02-13 2025-12-31 13F COHERENT COM 19247G107 402,106 -8,587 -2.09 74,217 67.76 0.0600
2025-11-06 2025-09-30 13F COHERENT COM 19247G107 410,693 -4,056 -0.98 44,240 19.57 0.0355
2025-08-12 2025-06-30 13F COHERENT COM 19247G107 414,749 24,556 6.29 37,000 46.02 0.0317
2025-05-29 2025-03-31 13F/A-1 COHERENT COM 19247G107 390,193 -3,512 -0.89 25,339 -32.06 0.0237
2025-04-08 2025-03-31 13F COHERENT COM 19247G107 390,193 -3,512 25,339 0.0237
2025-05-29 2024-12-31 13F/A-1 COHERENT COM 19247G107 393,705 -13,970 -3.43 37,296 2.89 0.0334
2025-01-30 2024-12-31 13F COHERENT COM 19247G107 393,705 -13,970 37,296 0.0334
2024-11-12 2024-09-30 13F COHERENT COM 19247G107 407,675 27,746 7.30 36,246 31.66 0.0327
2024-08-01 2024-06-30 13F COHERENT COM 19247G107 379,929 -318 -0.08 27,530 19.43 0.0259
2024-05-09 2024-03-31 13F COHERENT COM 19247G107 380,247 -13,636 -3.46 23,051 34.44 0.0221
2024-02-08 2023-12-31 13F COHERENT COM 19247G107 393,883 -6,126 -1.53 17,146 31.32 0.0180
2023-11-09 2023-09-30 13F COHERENT COM 19247G107 400,009 -21,884 -5.19 13,056 -39.30 0.0152
2023-08-08 2023-06-30 13F COHERENT COM 19247G107 421,893 4,273 1.02 21,508 143,286.67 0.0241
2023-05-11 2023-03-31 13F COHERENT COM 19247G107 417,620 -4,253 -1.01 16 -99.90 0.0196
2023-02-14 2022-12-31 13F COHERENT COM 19247G107 421,873 37,707 9.82 14,808 10.61 0.0199
2022-11-10 2022-09-30 13F COHERENT COM 19247G107 384,166 384,166 13,388 0.0199
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.