TOP TIERMARKET NEWSWIRE
Movers explained · September 13, 2026

Why Is AMGEN INC (AMGN) Stock Moving Today?

By the Top Tier Newswire AI Desk · September 9, 2026 at 12:20 AM ET · reviewed against 1 wire stories

AMGEN INC (AMGN) is drawing unusual attention today. Our newswire has captured 1 story on AMGN across 1 source in the last 36 hours, with AI sentiment reading bearish (avg 38/100).

Public view, delayed 4h. Every headline, price and sentiment read below — and this write-up itself — reaches Pro subscribers live. Public readers see it once it clears the delay.

Amgen Inc (AMGN) shares fell 10.08% to $393.17 in a session marked by investor concern over the future of its cholesterol-lowering drug olpasiran. The decline followed Novartis’ announcement of a failed Phase 3 trial for its competing drug pelacarsen, which raised doubts about the broader Lp(a) drug class. Despite Amgen releasing positive results from a late-stage lung cancer trial with AstraZeneca, the market focused on the negative implications for its cholesterol portfolio.

What Happened

The primary driver of the sell-off was Novartis’ Phase 3 trial failure for pelacarsen, which has created uncertainty about olpasiran’s potential. Amgen’s stock dropped significantly as investors reevaluated the risk of regulatory or commercial setbacks for its high-conviction asset. The market also appeared to discount Amgen’s positive lung cancer data, which showed that its drug Imdelltra in combination with AstraZeneca’s Imfinzi extended survival in a late-stage trial. However, this news could not offset the broader negative sentiment. BMO Capital Markets also downgraded Amgen following the Novartis news, adding pressure to the stock. The session saw heightened volatility, with Amgen shares falling to a 52-week low of $395.11 after an 8-session decline of 10.1%.

What The Data Shows

The stock’s intraday performance reflected a sharp sell-off, with volume expected to exceed its 30-day average. Over the past 30 days, sentiment has deteriorated from an average of 55/100 to 48/100. Recent insider transactions show three executives sold a combined $4.1 million in shares over the last 90 days. On the 52-week tape, the stock printed 42 fresh 52-week lows but also one fresh high on 2026-09-08. Congressional trades also included several sales of AMGN shares, with the most recent disclosed on 2026-09-05.

What To Watch

Investors will look to Amgen’s upcoming corporate actions, including its dividend schedule set for ex-dividend on 2026-08-21. The focus will remain on olpasiran’s regulatory path and how the market reacts to further data or competitor developments in the Lp(a) space.

AI-assisted analysis composed exclusively from headlines and data on the Top Tier newswire. Public view is delayed 4 hours from real time. Not financial advice.

AMGN by the numbers

7 sessions: -12.09%Coverage: 1 stories / 1 sourcesAI sentiment: 38/100 (bearish)Mkt cap: $236.4BP/E: 27.252w: $269.77 to $447.03
AMGN · Sep 9 session (5-min) · -0.49% vs prior close · updated 8:58 PM ET
$389$393$396prev close $393.17$391.257:15 AM10:25 AM1:35 PM4:45 PM7:55 PM7:15 AM · $392.507:25 AM · $392.357:35 AM · $392.967:40 AM · $392.507:45 AM · $392.757:55 AM · $392.708:00 AM · $393.408:05 AM · $393.408:10 AM · $393.508:20 AM · $393.468:25 AM · $393.378:35 AM · $393.258:50 AM · $393.258:55 AM · $393.489:05 AM · $393.569:10 AM · $393.009:15 AM · $393.339:20 AM · $393.209:25 AM · $392.249:30 AM · $392.009:35 AM · $390.949:40 AM · $391.859:45 AM · $393.569:50 AM · $394.039:55 AM · $393.7010:00 AM · $394.9710:05 AM · $394.4310:10 AM · $394.4210:15 AM · $395.1110:20 AM · $394.3210:25 AM · $393.6810:30 AM · $392.7610:35 AM · $393.0410:40 AM · $393.1310:45 AM · $393.0910:50 AM · $392.9010:55 AM · $393.2911:00 AM · $392.3311:05 AM · $392.2511:10 AM · $393.1511:15 AM · $393.3611:20 AM · $393.2311:25 AM · $393.7411:30 AM · $392.8811:35 AM · $393.0711:40 AM · $392.6711:45 AM · $392.6611:50 AM · $392.8511:55 AM · $392.7112:00 PM · $392.2612:05 PM · $391.6712:10 PM · $391.6912:15 PM · $391.6512:20 PM · $391.4812:25 PM · $391.7012:30 PM · $391.5712:35 PM · $391.4312:40 PM · $391.4912:45 PM · $391.2512:50 PM · $391.3012:55 PM · $391.171:00 PM · $390.621:05 PM · $390.481:10 PM · $390.641:15 PM · $390.521:20 PM · $391.331:25 PM · $391.261:30 PM · $390.621:35 PM · $390.081:40 PM · $390.411:45 PM · $390.571:50 PM · $390.601:55 PM · $390.912:00 PM · $391.012:05 PM · $390.642:10 PM · $390.942:15 PM · $391.102:20 PM · $392.452:25 PM · $392.332:30 PM · $391.962:35 PM · $391.862:40 PM · $391.232:45 PM · $390.642:50 PM · $390.842:55 PM · $391.633:00 PM · $391.103:05 PM · $391.753:10 PM · $391.303:15 PM · $391.753:20 PM · $391.773:25 PM · $392.663:30 PM · $392.153:35 PM · $392.083:40 PM · $391.903:45 PM · $391.843:50 PM · $392.103:55 PM · $391.284:00 PM · $391.274:05 PM · $391.264:20 PM · $391.274:25 PM · $391.275:05 PM · $391.335:15 PM · $391.275:40 PM · $392.025:50 PM · $391.275:55 PM · $392.316:25 PM · $391.277:40 PM · $391.197:45 PM · $391.107:55 PM · $391.25
AI sentiment, last 36h · averaged over 1 story · 38/100 bearish
AI sentiment 38/100 (bearish)0 · bearish50bullish · 100

The headlines behind the move

Story flow · 1 story on the wire, last 36h · hover or tap a dot for the headline
36h ago24h ago12h agonowYahoo Top · sentiment 38 · Jim Cramer Weighs Amgen (AMGN) After Novartis Trial FailureYahoo Top · 38Jim Cramer Weighs Amgen (AMGN) After Novartis Trial Failure
1d agoYahoo TopBEARISH 38General

Jim Cramer Weighs Amgen (AMGN) After Novartis Trial Failure

During the September 8 episode of Mad Money, Jim Cramer said Amgen Inc. (NASDAQ:AMGN) may have limited downside after the stock suffered its steepest one-day decline in more than two decades following disappointing cardiovascular trial results from Novartis. Finally, there’s Amgen. Admittedly, this one takes a little bit of fortitude. It was down 44 points […]

Frequently asked questions

Why is AMGN stock moving today?

AMGEN INC (AMGN) is drawing unusual attention today. Our newswire has captured 1 story on AMGN across 1 source in the last 36 hours, with AI sentiment reading bearish (avg 38/100). The most recent driver: "Jim Cramer Weighs Amgen (AMGN) After Novartis Trial Failure" (Yahoo Top).

Is AMGN a buy right now?

Top Tier Newswire does not give financial advice. Our AI sentiment across the last 36 hours of AMGN coverage reads 38/100 over 1 stories; treat it as a research signal and do your own diligence.

How fast does this page update?

The data sections refresh continuously as the newswire lands coverage; the written analysis is published once per trading day. Pro subscribers additionally get real-time push alerts, watchlists, and the full live terminal.

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More on AMGN: full news and sentiment history. Sentiment scores are AI-derived research signals, not financial advice.

Earlier AMGN move explainers: 2026-09-09 · 2026-09-08 · 2026-08-31