ADTN — ADTRAN Holdings, Inc.Today's name, from the SEC's present-day ticker list — a present-day mapping, not the name as of each filing.

Congress trades
1
all time
Members · 12m
0
0 buys · 0 sells · by trade date
Latest filing
01-20
2020-01-20
Rows filed past the STOCK Act's 45-day window, stated on the row, never editorialised; both dates and the receipt stay on every row.
0
every row filed inside 45 days
13F holders
219
all listed · 2026-03-31
Congress: statutory ranges, filed up to 45 days after the trade · 13F: quarter-end snapshots, filed up to 45 days lateras of 2026-10-29
Congress 1Institutional 219

Congress · disclosure timeline

By trade date · 24 months · 0 rows ▲ buy, ▼ sell; height = lower bound (log scale). Trade date, not filing date — the filing lag is in the table below.

No dated ADTN rows fall inside the trailing 24 months by trade date.

Members active in ADTN

12 months · most active first Rows = number of disclosures, not dollars. Net = lower bound of the net range. Committees as of each member's latest trade in the window (roster snapshot 2026-10-29).

No member disclosed ADTN in the trailing 12 months.

Congressional disclosures

Newest filed firstAll 1 row ↗
Latest congressional filings mentioning ADTN
FiledMemberSide · OwnerTraded · LagAmountRange · FlagsSrc
2020-01-20Mo Brooks R–AL-5SELL JT (jointly owned)Traded 01-02 +18d$1K–$15K

13F holders · Quarter ended 2026-03-31Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt. · longs only

Top institutional holders of ADTN for quarter 2026-03-31, 1–25 of 219 holders
#FilerValueSecuritiesFlagsderived by Public Filings from this build's reviewed ticker-mapping holders list for this share class; that list carries each holder's share count, share change and filed date, which this table does not show, but no document links — the EDGAR link opens the filer's 13F list·§
1BlackRock, Inc.$98.6M1
derived ·§ EDGAR ↗
2VANGUARD PORTFOLIO MANAGEMENT LLC$60.0M1
derived ·§ EDGAR ↗
3VANGUARD CAPITAL MANAGEMENT LLC$43.1M1
derived ·§ EDGAR ↗
4ROYCE & ASSOCIATES LP$39.3M1
derived ·§ EDGAR ↗
5DnB Asset Management AS$39.3M1
derived ·§ EDGAR ↗
6STATE STREET CORP$29.6M1
derived ·§ EDGAR ↗
7WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC$25.0M1
derived ·§ EDGAR ↗
8MILLENNIUM MANAGEMENT LLC$23.9M1
derived ·§ EDGAR ↗
9MORGAN STANLEY$23.1M1
derived ·§ EDGAR ↗
10GEODE CAPITAL MANAGEMENT, LLC$22.9M1
derived ·§ EDGAR ↗
11Divisar Capital Management LLC$22.3M1
derived ·§ EDGAR ↗
12First Eagle Investment Management, LLC$17.2M1
derived ·§ EDGAR ↗
13DIMENSIONAL FUND ADVISORS LP$16.8M1
derived ·§ EDGAR ↗
14NEEDHAM INVESTMENT MANAGEMENT LLC$15.5M1
derived ·§ EDGAR ↗
15Shannon River Fund Management LLC$15.3M1
derived ·§ EDGAR ↗
16D. E. Shaw & Co., Inc.$15.3M1
derived ·§ EDGAR ↗
17Boston Partners$14.9M1
derived ·§ EDGAR ↗
18TWO SIGMA INVESTMENTS, LP$14.1M1
derived ·§ EDGAR ↗
19SEI INVESTMENTS CO$13.9M1
derived ·§ EDGAR ↗
20Invesco Ltd.$12.5M1
derived ·§ EDGAR ↗
21BARCLAYS PLC$11.7M1
derived ·§ EDGAR ↗
22FEDERATED HERMES, INC.$11.6M1
derived ·§ EDGAR ↗
23Squarepoint Ops LLC$11.2M1
derived ·§ EDGAR ↗
24AQR CAPITAL MANAGEMENT LLC$10.6M1
derived ·§ EDGAR ↗
25WESTERLY CAPITAL MANAGEMENT, LLC$10.1M1
derived ·§ EDGAR ↗
Show all 219 holders
Truncated by Public Filings. All 185 13F filers reporting this share class are listed. Method ↗

Crowding — not available in this build. No holder rows for the selected period, so no percentile can be ranked.

Congress ↔ notable managers · ADTN

Congress · last 90 days

Buyers
0 — —
Sellers
0 — —

filed 2026-07-31 → 2026-10-29 · statutory ranges

Notable managers · quarter ended 2026-03-31

Adding
1 Caxton Associates $308K held
Trimming
0 — $0 held

by shares · $ = value heldNEW + ADD vs TRIM + EXIT, by share count. $ = reported value now, not the change. · ADTRAN HOLDINGS INC

Merged timeline of congressional filings and notable-manager moves on ADTN
DateWhoChangeSize
2026-05-14Caxton Associates 13FNEW+24,497 sh

1 newest, by filing date · 13F rows are quarter-end snapshots, not trades

Congress vs filers

12 months
Congress net (rows)no rows
Congress net ($ bound)$0
Filersnot computedThe filer side needs per-issuer quarter-over-quarter actions, which the published aggregate does not carry for this issuer. Convergence and divergence are stated only when both sides are computed.