{"id":53525,"date":"2026-09-21T14:03:38","date_gmt":"2026-09-21T14:03:38","guid":{"rendered":"https:\/\/volity.io\/blog\/stock-market-mara-mstr-coin-2\/"},"modified":"2026-09-21T23:57:46","modified_gmt":"2026-09-21T23:57:46","slug":"stock-market-mara-mstr-coin","status":"publish","type":"post","link":"https:\/\/volity.io\/fr\/actualites\/stock-market-mara-mstr-coin\/","title":{"rendered":"March\u00e9s actions aujourd&rsquo;hui : MARA, MSTR et COIN pendant la pause du Bitcoin"},"content":{"rendered":"<h2>L&rsquo;app\u00e9tit pour le risque revient, mais seulement dans certains compartiments<\/h2>\n\n<p>Les actions am\u00e9ricaines ont ouvert le lundi 21 septembre sur une note mesur\u00e9e mais constructive.<\/p>\n\n<p>Le Dow Jones Industrial Average a gagn\u00e9 plus de 200 points en d\u00e9but de s\u00e9ance. Dans le m\u00eame temps, les services de communication ont men\u00e9 les grands secteurs.<\/p>\n\n<p>L&rsquo;\u00e9nergie est rest\u00e9e \u00e0 la tra\u00eene, les prix du brut plus faibles pesant sur les producteurs et sur les soci\u00e9t\u00e9s de services p\u00e9troliers. Cette division r\u00e9sume bien l&rsquo;humeur du march\u00e9.<\/p>\n\n<p>Les investisseurs veulent toujours du risque. Ils veulent toutefois des b\u00e9n\u00e9fices visibles, des th\u00e8mes durables ou un catalyseur de march\u00e9 solide.<\/p>\n\n<p>Depuis la d\u00e9cision de la R\u00e9serve f\u00e9d\u00e9rale (Fed) et l&rsquo;expiration des options, le march\u00e9 est donc devenu plus s\u00e9lectif. Les poids lourds des indices restent le volant du march\u00e9.<\/p>\n\n<p>SPY et QQQ ont tenu bon, tandis que AAPL, MSFT, NVDA, GOOGL, META et TSLA ont donn\u00e9 le ton g\u00e9n\u00e9ral du risque de la journ\u00e9e.<\/p>\n\n<p>Les traders de Volity surveillent pourtant deux terrains plus anim\u00e9s. Le Bitcoin marque une pause pr\u00e8s de ses niveaux records, tandis que les donn\u00e9es sur les traitements contre l&rsquo;ob\u00e9sit\u00e9 ont relanc\u00e9 une \u00e2pre bataille pharmaceutique.<\/p>\n\n<h2>Le Bitcoin met les nerfs des traders \u00e0 l&rsquo;\u00e9preuve<\/h2>\n\n<p>Le Bitcoin a r\u00e9cemment test\u00e9 $85 000 apr\u00e8s une forte progression automnale. Il s&rsquo;\u00e9change d\u00e9sormais un peu au-dessus de $80 000, toujours \u00e0 un niveau \u00e9lev\u00e9 mais sans s&#8217;emballer.<\/p>\n\n<p>Cette nuance compte, car les actions li\u00e9es aux cryptomonnaies amplifient chaque mouvement de la pi\u00e8ce sous-jacente. Une variation de $1 000 sur le Bitcoin peut vite modifier la valorisation des mineurs.<\/p>\n\n<p>La question technique imm\u00e9diate est simple. Le Bitcoin peut-il d\u00e9fendre la zone des $80 000 et revenir vers $85 000 ?<\/p>\n\n<p>S&rsquo;il n&rsquo;y parvient pas, les titres qui ont le plus grimp\u00e9 pourraient chuter le plus fort. L&rsquo;enthousiasme pour les cryptomonnaies s&rsquo;en va rarement en silence.<\/p>\n\n<p>Marathon Digital, ou MARA, reste l&rsquo;un des paris les plus purs du march\u00e9 sur le b\u00eata du Bitcoin. Son action se comporte souvent comme une vue \u00e0 effet de levier sur la pi\u00e8ce.<\/p>\n\n<p>Des prix du Bitcoin plus \u00e9lev\u00e9s am\u00e9liorent l&rsquo;\u00e9conomie du minage et attirent les acheteurs de momentum. \u00c0 l&rsquo;inverse, un repli marqu\u00e9 peut comprimer ces deux hypoth\u00e8ses d&rsquo;un coup.<\/p>\n\n<p>Strategy, anciennement MicroStrategy, se n\u00e9gocie sous le ticker MSTR et offre une autre expression directe de la th\u00e8se Bitcoin. Son bilan reste fortement li\u00e9 \u00e0 ses avoirs en BTC.<\/p>\n\n<p>MSTR a r\u00e9cemment enregistr\u00e9 une hausse \u00e0 un chiffre \u00e9lev\u00e9 alors que le Bitcoin approchait des $85 000. Les traders continuent donc de le traiter comme un proxy crypto plus volatil.<\/p>\n\n<p>Coinbase, ticker COIN, et Robinhood, ticker HOOD, proposent une autre voie. Ils profitent de l&rsquo;activit\u00e9 autant que des prix.<\/p>\n\n<p>Des prix \u00e9lev\u00e9s du Bitcoin ram\u00e8nent souvent les clients particuliers vers les applications de trading. Un plus grand nombre de transactions peut faire monter les spreads, les commissions et les revenus de services associ\u00e9s.<\/p>\n\n<p>COIN offre l&rsquo;exposition directe la plus claire aux volumes du march\u00e9 crypto. HOOD, de son c\u00f4t\u00e9, combine activit\u00e9 crypto, courtage actions et attentes r\u00e9glementaires.<\/p>\n\n<p>Pour ces deux valeurs, un march\u00e9 du Bitcoin calme compte presque autant qu&rsquo;un march\u00e9 en baisse. Des hausses de prix sans volume ne remplissent pas les postes de p\u00e9age.<\/p>\n\n<ul>\n  <li><b>Bitcoin :<\/b> le support autour de $80 000 reste la ligne imm\u00e9diate pour les traders de momentum.<\/li>\n  <li><b>MARA :<\/b> offre un levier op\u00e9rationnel sur le Bitcoin, mais la baisse arrive g\u00e9n\u00e9ralement plus vite.<\/li>\n  <li><b>MSTR :<\/b> reste un v\u00e9hicule actions \u00e0 b\u00eata \u00e9lev\u00e9 pour une vue haussi\u00e8re ou baissi\u00e8re sur le BTC.<\/li>\n  <li><b>COIN et HOOD :<\/b> ont besoin de volumes de transactions soutenus, pas seulement d&rsquo;un prix \u00e9lev\u00e9 du Bitcoin.<\/li>\n<\/ul>\n\n<h2>Novo affronte un tour d&rsquo;honneur plus compliqu\u00e9<\/h2>\n\n<p>La journ\u00e9e investisseurs de Novo Nordisk a remis la bataille des traitements contre l&rsquo;ob\u00e9sit\u00e9 au centre de l&rsquo;attention. Le groupe a d\u00e9taill\u00e9 ses plans de croissance de 2026 \u00e0 2030 et ses changements d&rsquo;effectifs.<\/p>\n\n<p>CagriSema a toutefois domin\u00e9 les discussions des investisseurs. Cette association \u00e0 dose fixe vise \u00e0 la fois la perte de poids et le contr\u00f4le de la glyc\u00e9mie.<\/p>\n\n<p>Dans l&rsquo;essai de phase 3 REIMAGINE 5, CagriSema 1,0\/1,0 mg a devanc\u00e9 le tirzepatide 5 mg sur la perte de poids. Les r\u00e9sultats ressortent \u00e0 environ 12,4 % contre 9,1 %.<\/p>\n\n<p>Cet essai portait sur des patients atteints de diab\u00e8te de type 2. Novo peut donc d\u00e9fendre un argumentaire cr\u00e9dible sur un segment cliniquement important.<\/p>\n\n<p>REDEFINE 9 a aussi produit des donn\u00e9es frappantes dans l&rsquo;ob\u00e9sit\u00e9 face au placebo. CagriSema a entra\u00een\u00e9 une r\u00e9duction de poids d&rsquo;environ 21 %, contre environ 2 % pour le placebo.<\/p>\n\n<p>Ces chiffres renforcent le portefeuille de Novo apr\u00e8s le succ\u00e8s commercial du semaglutide. Ils ne r\u00e8glent pas pour autant la bataille plus large avec Eli Lilly.<\/p>\n\n<p>Les donn\u00e9es ant\u00e9rieures de REDEFINE 4 avaient donn\u00e9 \u00e0 Lilly le meilleur r\u00e9sultat affich\u00e9 dans le traitement direct de l&rsquo;ob\u00e9sit\u00e9. L&rsquo;essai comparait CagriSema \u00e0 des doses de tirzepatide allant jusqu&rsquo;\u00e0 15 mg.<\/p>\n\n<p>CagriSema a produit environ 23,0 % de perte de poids apr\u00e8s 84 semaines. Le tirzepatide, lui, a atteint environ 25,5 %.<\/p>\n\n<p>En cons\u00e9quence, CagriSema a manqu\u00e9 son crit\u00e8re pr\u00e9d\u00e9fini de non-inf\u00e9riorit\u00e9. Sur l&rsquo;\u00e9valuation plus stricte du sch\u00e9ma de traitement, l&rsquo;\u00e9cart s&rsquo;est creus\u00e9 \u00e0 environ 3,4 points de pourcentage.<\/p>\n\n<p>Ce contraste laisse \u00e0 Novo un dossier d&rsquo;investissement nuanc\u00e9. CagriSema para\u00eet convaincant dans le diab\u00e8te et face au tirzepatide \u00e0 plus faible dose.<\/p>\n\n<p>Lilly conserve toutefois l&rsquo;avantage sur la perte de poids dans le haut des dosages utilis\u00e9s contre l&rsquo;ob\u00e9sit\u00e9. Les investisseurs doivent \u00e9viter de traiter l&rsquo;un ou l&rsquo;autre r\u00e9sultat comme un verdict universel.<\/p>\n\n<p>Le prochain d\u00e9fi de Novo est celui du positionnement commercial. La direction doit expliquer o\u00f9 CagriSema se place \u00e0 c\u00f4t\u00e9 du semaglutide, plut\u00f4t que de promettre un remplacement pur et simple.<\/p>\n\n<p>La tol\u00e9rance, l&rsquo;observance, l&rsquo;approvisionnement et les strat\u00e9gies d&rsquo;association peuvent compter autant que l&rsquo;efficacit\u00e9 maximale. Ces d\u00e9tails d\u00e9terminent souvent les prescriptions dans les cabinets r\u00e9els.<\/p>\n\n<h2>L&rsquo;infrastructure IA offre un pari plus calme<\/h2>\n\n<p>Par ailleurs, Digital Realty, ticker DLR, reste une expression plus stable des d\u00e9penses d&rsquo;investissement li\u00e9es \u00e0 l&rsquo;IA. Les centres de donn\u00e9es ont besoin d&rsquo;\u00e9lectricit\u00e9, de refroidissement, de terrains et de capacit\u00e9 s\u00e9curis\u00e9e.<\/p>\n\n<p>Les hyperscalers continuent de r\u00e9server de la capacit\u00e9 \u00e0 long terme pour les charges de travail cloud et IA. Les propri\u00e9taires d&rsquo;infrastructures offrent donc une exposition sans d\u00e9pendre des gros titres quotidiens sur les chatbots.<\/p>\n\n<p>DLR ne bougera pas comme MARA pendant une envol\u00e9e du Bitcoin. Ce profil plus lent peut s\u00e9duire les investisseurs qui \u00e9quilibrent des positions th\u00e9matiques volatiles.<\/p>\n\n<p>Les valorisations des centres de donn\u00e9es m\u00e9ritent malgr\u00e9 tout un examen attentif. La hausse des co\u00fbts de l&rsquo;\u00e9lectricit\u00e9, les conditions de financement et la concentration de la client\u00e8le peuvent vite perturber l&rsquo;argument d&rsquo;une croissance de longue dur\u00e9e.<\/p>\n\n<h2>D&rsquo;autres valeurs sur l&rsquo;\u00e9cran de trading<\/h2>\n\n<p>MarketAxess, AVTX et KPLT sont apparus sur les listes de surveillance de retour \u00e0 la moyenne apr\u00e8s que les indicateurs de force relative sont pass\u00e9s au-dessus de 70.<\/p>\n\n<p>C&rsquo;est un signal d&rsquo;alerte, pas un ordre de vente \u00e0 d\u00e9couvert automatique. Les traders devraient plut\u00f4t guetter les cassures rat\u00e9es, l&rsquo;essoufflement des volumes ou les supports rompus.<\/p>\n\n<p>AAR Corp., ticker AIR, publie ses r\u00e9sultats le 29 septembre. Les attentes tablent sur une croissance du chiffre d&rsquo;affaires et du b\u00e9n\u00e9fice par action sur un an.<\/p>\n\n<p>Son comportement boursier avant la publication pourrait r\u00e9v\u00e9ler si les institutionnels attendent une nouvelle bonne surprise dans l&rsquo;a\u00e9ronautique et la d\u00e9fense. Les valeurs comparables du secteur offrent en parall\u00e8le un point de comparaison utile.<\/p>\n\n<ol>\n  <li>Surveiller le support du Bitcoin autour de $80 000 avant d&rsquo;ajouter de l&rsquo;exposition au b\u00eata crypto.<\/li>\n  <li>S\u00e9parer le dossier diab\u00e8te de Novo de la comparaison \u00e0 pleine dose dans l&rsquo;ob\u00e9sit\u00e9 avec Lilly.<\/li>\n  <li>Utiliser DLR comme un pari plus lent sur l&rsquo;infrastructure IA, pas comme un substitut au momentum des semi-conducteurs.<\/li>\n  <li>Traiter les signaux de surachat comme une invitation \u00e0 resserrer le contr\u00f4le du risque, plut\u00f4t que comme des paris baissiers aveugles.<\/li>\n<\/ol>\n\n<p>Le march\u00e9 de lundi ne court pas apr\u00e8s chaque histoire. Il r\u00e9compense plut\u00f4t les catalyseurs clairs, la demande visible et les r\u00e9cits qui r\u00e9sistent \u00e0 un examen plus attentif.<\/p>\n\n\n<h2 class=\"wp-block-heading volity-related-coverage\">Articles connexes sur Volity<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/volity.io\/fr\/actions\/what-is-a-pe-ratio\/\">Qu&rsquo;est-ce qu&rsquo;un PER et comment l&rsquo;utiliser<\/a><\/li>\n<li><a href=\"https:\/\/volity.io\/fr\/actions\/fundamental-analysis-stock-trading\/\">Analyse fondamentale en trading d&rsquo;actions : une d\u00e9finition op\u00e9rationnelle<\/a><\/li>\n<li><a href=\"https:\/\/volity.io\/fr\/actions\/growth-investing-vs-value-investing\/\">Investissement growth vs investissement value : quel style vous convient ?<\/a><\/li>\n<li><a href=\"https:\/\/volity.io\/fr\/actions\/fractional-shares-explained\/\">Actions fractionn\u00e9es expliqu\u00e9es : comment commencer \u00e0 investir avec $50<\/a><\/li>\n<li><a href=\"https:\/\/volity.io\/fr\/actions\/how-to-start-stock-trading\/\">Comment commencer le trading d&rsquo;actions : un guide d\u00e9butant 2026<\/a><\/li>\n<li><a href=\"https:\/\/volity.io\/fr\/actions\/dividend-investing-for-beginners\/\">Investissement de dividendes pour d\u00e9butants : comment commencer<\/a><\/li>\n<\/ul>\n\n\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"NewsArticle\",\"headline\":\"March\u00e9s actions aujourd'hui : MARA, MSTR et COIN pendant la pause du Bitcoin\",\"datePublished\":\"2026-09-21T14:03:38+00:00\",\"dateModified\":\"2026-09-21T14:03:38+00:00\",\"author\":{\"@type\":\"Person\",\"name\":\"Alexander Bennett\",\"url\":\"https:\/\/volity.io\/\"},\"publisher\":{\"@type\":\"Organization\",\"name\":\"Volity\",\"url\":\"https:\/\/volity.io\/\",\"logo\":{\"@type\":\"ImageObject\",\"url\":\"https:\/\/volity.io\/wp-content\/uploads\/2026\/03\/logo.webp\",\"width\":512,\"height\":512}},\"image\":\"https:\/\/volity.io\/wp-content\/uploads\/2026\/09\/BitcoinPause.webp\",\"mainEntityOfPage\":{\"@type\":\"WebPage\",\"@id\":\"https:\/\/volity.io\/fr\/actualites\/stock-market-mara-mstr-coin\/\"},\"articleSection\":\"News\",\"inLanguage\":\"fr\"}<\/script>\n","protected":false},"excerpt":{"rendered":"<p>L&rsquo;app\u00e9tit pour le risque revient, mais seulement dans certains compartiments Les actions am\u00e9ricaines ont ouvert le lundi 21 septembre sur une note [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":53519,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"custom_schema":"","footnotes":""},"categories":[223],"tags":[],"class_list":["post-53525","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.3 (Yoast SEO v28.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>March\u00e9s actions aujourd&#039;hui : MARA, MSTR et COIN pendant la pause du Bitcoin | Volity<\/title>\n<meta name=\"description\" content=\"Le Dow gagne plus de 200 points, les services de communication m\u00e8nent et l&#039;\u00e9nergie recule, tandis que Novo n\u00e9gocie un tour d&#039;honneur compliqu\u00e9 et que\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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