ADTRAN Holdings, Inc.
DE ˙ XTRA ˙ US00486H1059
14,10 € ↓ -0,41 (-2,80%)
2026-06-05
DEL PRIS
SecurityDE:QH9 / ADTRAN Holdings, Inc.
InstitutionPrelude Capital Management, Llc
Latest Disclosed Ownership15,457 shares
Latest Disclosed Value $ 194,449
Prelude Capital Management, Llc reports 12.67% increase in ownership of QH9 / ADTRAN Holdings, Inc.

On May 15, 2026 - Prelude Capital Management, Llc filed a 13F-HR form disclosing ownership of 15,457 shares of ADTRAN Holdings, Inc. (DE:QH9) valued at $164,385 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 13,719 shares of ADTRAN Holdings, Inc.. This represents a change in shares of 12.67% during the quarter. The current value of the position is $218,006 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)
2026-05-15 2026-03-31 13F ADTRAN HOLDINGS COM 00486H105 15,457 1,738 12.67 194 63.03 0.0149
2026-02-17 2025-12-31 13F ADTRAN HOLDINGS COM 00486H105 13,719 -5,681 -29.28 119 -34.25 0.0088
2025-11-14 2025-09-30 13F ADTRAN HOLDINGS COM 00486H105 19,400 19,400 182 0.0142
2024-11-14 2024-09-30 13F/A-1 ADTRAN HOLDINGS COM 00486H105 0 -13,469 -100.00 0 -100.00
2024-11-14 2024-09-30 13F ADTRAN HOLDINGS COM 00486H105 0 0
2024-08-14 2024-06-30 13F ADTRAN HOLDINGS COM 00486H105 13,469 13,469 71 0.0049
2023-08-14 2023-06-30 13F ADTRAN HOLDINGS COM 00486H105 0 -10,347 -100.00 0 -100.00
2023-06-01 2023-03-31 13F/A-1 ADTRAN HOLDINGS COM 00486H105 10,347 -7,562 -42.22 164 -51.19 0.0098
2023-05-15 2023-03-31 13F ADTRAN HOLDINGS COM 00486H105 10,347 -7,562 164 0.0053
2023-02-14 2022-12-31 13F ADTRAN HOLDINGS COM 00486H105 17,909 17,909 337 0.0175
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.