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Dimensional Fund Advisors LP Buys 448,848 Shares of ADTRAN Holdings, Inc. $ADTN - MarketBeatMarketBeat · Sat, 08 Aug 2026 07:36:16 GMTArrowstreet Capital Limited Partnership Raises Holdings in ADTRAN Holdings, Inc. $ADTN - MarketBeatMarketBeat · Mon, 03 Aug 2026 07:41:56 GMTSei Investments Co. Purchases 683,262 Shares of ADTRAN Holdings, Inc. $ADTN - MarketBeatMarketBeat · Fri, 31 Jul 2026 07:00:00 GMTADTRAN (NASDAQ:ADTN) Lowered to Buy Rating by Wall Street Zen - MarketBeatMarketBeat · Tue, 28 Jul 2026 07:00:00 GMT