{"id":164057,"date":"2022-10-28T12:50:00","date_gmt":"2022-10-28T16:50:00","guid":{"rendered":"https:\/\/ibkrcampus.com\/?p=164057"},"modified":"2023-02-10T13:30:21","modified_gmt":"2023-02-10T18:30:21","slug":"weight-distribution-in-top-heavy-indices","status":"publish","type":"post","link":"https:\/\/www.interactivebrokers.com\/campus\/traders-insight\/securities\/stocks\/weight-distribution-in-top-heavy-indices\/","title":{"rendered":"Weight Distribution in Top-Heavy Indices"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">I wish I could lose weight easily.&nbsp; But it\u2019s a slow process at best.&nbsp; I\u2019m coming around to the idea that redistributing my existing weight could have benefits as well.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Market capitalization weighted indices never have the opportunity to lose weight.&nbsp; By definition, their components make up 100% of the index.&nbsp; But as stocks move up and down, their weight distribution can change \u2013 sometimes abruptly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We have frequently discussed how top-heavy the NASDAQ 100 Index (NDX) is.\u00a0The market capitalization of its largest components so concentrated that the top 7 companies make up about 40% of its weight.\u00a0 That was a big problem two days ago, when its second and third largest components Microsoft (MSFT) and Alphabet (GOOG, GOOGL) fell sharply after earnings.\u00a0 The gloom continued yesterday when the sixth largest company Meta Platforms (META) lost about a fifth of its value.\u00a0 Things looked even more grim when the first and fourth largest companies, Apple (AAPL) and Amazon (AMZN) both sold off after yesterday\u2019s close.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Since then, both have improved rather considerably.&nbsp; AMZN remains about 10% lower, but it has pared much of last night\u2019s drop.&nbsp; Meanwhile, AAPL went from being down about 4% after the close to up 7% this morning.&nbsp; It wasn\u2019t clear why AAPL was initially punished for beating its estimates.&nbsp; Maybe it was a slight miss on iPhone revenues, even though most other sectors did well.&nbsp; Sometimes a good night\u2019s sleep can allow people to think more clearly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">AAPL\u2019s rally has been a huge boon to NDX.&nbsp; It is not just a matter of an index benefitting from its largest stock moving higher.&nbsp; It is also that AAPL has become an even larger part of the index\u2019 weight this week.&nbsp; The logic is simple \u2013 if AAPL is rising smartly while the next few largest companies have shrunk by 5-10% or more, then AAPL\u2019s relative weight in NDX has grown.&nbsp; When your #1 stock represents about 14% of the index, and that #1 stock shoots up by 7%, it is a real boon \u2013 and far outweighs the #4 stock falling by 10%.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That is why we now see NDX being up for the week.&nbsp; Part of that is because the index rose quite sharply on Monday and Tuesday, part of it that it is being dominated today by AAPL\u2019s rise (while some bargain hunting in MSFT and GOOG hasn\u2019t hurt).&nbsp; Here\u2019s the proof:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong><em>NDX 5-Day Chart, 5-Minute Bars with Last Friday\u2019s Close Highlighted<\/em><\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"936\" height=\"569\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/Picture1-24.png\" alt=\"NDX 5-Day Chart, 5-Minute Bars with Last Friday\u2019s Close Highlighted\" class=\"wp-image-164059 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/Picture1-24.png 936w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/Picture1-24-700x426.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/Picture1-24-300x182.png 300w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/Picture1-24-768x467.png 768w\" data-sizes=\"(max-width: 936px) 100vw, 936px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 936px; aspect-ratio: 936\/569;\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Source: Interactive Brokers<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">While AAPL is also the largest stock in the S&amp;P 500 Index (SPX), it is about half as important.&nbsp; That said, a steady stream of well-received earnings in many of that index\u2019 key components \u2013 stocks like Caterpillar (CAT), McDonald\u2019s (MCD), Exxon Mobil (XOM) and Chevron (CHV) \u2013 were able to provide their own source of lift to the index and blunted much of the negative impact of the megacap tech losses.&nbsp; SPX has spent the entire week in positive territory, as shown below:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong><em>NDX 5-Day Chart, 5-Minute Bars (red\/green) with Last Friday\u2019s Close Highlighted, alongside&nbsp; SPX (blue line)<\/em><\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"936\" height=\"569\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/Picture2-15.png\" alt=\"NDX 5-Day Chart, 5-Minute Bars (red\/green) with Last Friday\u2019s Close Highlighted, alongside  SPX (blue line)\" class=\"wp-image-164060 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/Picture2-15.png 936w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/Picture2-15-700x426.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/Picture2-15-300x182.png 300w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/Picture2-15-768x467.png 768w\" data-sizes=\"(max-width: 936px) 100vw, 936px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 936px; aspect-ratio: 936\/569;\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Source: Interactive Brokers<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Looking at the broader index\u2019 technical picture, we see that SPX is at a potentially crucial technical level.&nbsp; It tested its 50-day moving average earlier this week, and is doing so once again.&nbsp; It is also nearing a test of its 100-day moving average, which is only about 1% above the 50-day.&nbsp; We see from the chart below that SPX rode its 50- and 100-day moving averages higher throughout 2021.&nbsp; Most support was provided by the 50-day, but the 100-day held up the trend in the few times that the 50-day couldn\u2019t.&nbsp; So far in 2022, however, these moving averages have been less valuable indicators. Simply put, the higher volatility that we\u2019ve seen this year has caused us to move through these formerly reliable levels with relative ease.&nbsp; (The 200-day put a lid on the summer rally, but it seems quite far away at its current 4100 level.)<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-spx-2-year-chart-daily-bars-with-50-yellow-100-blue-and-200-day-yellow-moving-averages\"><strong><em>SPX 2-Year Chart, Daily Bars with 50 (yellow), 100 (blue), and 200-Day (yellow) Moving Averages<\/em><\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"936\" height=\"538\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/Picture3-13.png\" alt=\"SPX 2-Year Chart, Daily Bars with 50 (yellow), 100 (blue), and 200-Day (yellow) Moving Averages\" class=\"wp-image-164061 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/Picture3-13.png 936w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/Picture3-13-700x402.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/Picture3-13-300x172.png 300w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/Picture3-13-768x441.png 768w\" data-sizes=\"(max-width: 936px) 100vw, 936px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 936px; aspect-ratio: 936\/538;\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Source: Interactive Brokers<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Momentum feels rather strong today, so it wouldn\u2019t surprise me much if we offered a successful test of these averages either later today or in the coming sessions.&nbsp; Let\u2019s see how aggressive traders want to be ahead of Wednesday\u2019s FOMC meeting.&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Market capitalization weighted indices never have the opportunity to lose weight.  By definition, their components make up 100% of the index.  But as stocks move up and down, their weight distribution can change \u2013 sometimes abruptly.<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":true,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[14700,6,8,9,22,26,3],"tags":[148,264,4220,44],"contributors-categories":[13576],"class_list":["post-164057","post","type-post","status-publish","format-standard","category-ibkr-market-insights","category-north-america","category-region","category-securities","category-stocks","category-text-articles","category-traders-insight","tag-amazon","tag-apple","tag-stock-indices","tag-stocks","contributors-categories-interactive-brokers"],"pp_statuses_selecting_workflow":false,"pp_workflow_action":"current","pp_status_selection":"publish","acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.9 (Yoast SEO v27.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Weight Distribution in Top-Heavy Indices | Traders&#039; Insight<\/title>\n<meta name=\"description\" content=\"Market capitalization weighted indices never have the opportunity to lose weight. 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But as stocks move up and down, their weight distribution can change \u2013 sometimes abruptly.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.interactivebrokers.com\/campus\/traders-insight\/weight-distribution-in-top-heavy-indices\/\" \/>\n<meta property=\"og:site_name\" content=\"IBKR Campus US\" \/>\n<meta property=\"article:published_time\" content=\"2022-10-28T16:50:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-02-10T18:30:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ibkrcampusdev.wpengine.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/Picture1-24.png\" \/>\n<meta name=\"author\" content=\"Steve Sosnick\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Steve Sosnick\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\n\t    \"@context\": \"https:\\\/\\\/schema.org\",\n\t    \"@graph\": [\n\t        {\n\t            \"@type\": \"NewsArticle\",\n\t            \"@id\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/traders-insight\\\/weight-distribution-in-top-heavy-indices\\\/#article\",\n\t            \"isPartOf\": {\n\t                \"@id\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/traders-insight\\\/weight-distribution-in-top-heavy-indices\\\/\"\n\t            },\n\t            \"author\": {\n\t                \"name\": \"Steve Sosnick\",\n\t                \"@id\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/#\\\/schema\\\/person\\\/31988d9596575a63ddc53e92049a2549\"\n\t            },\n\t            \"headline\": \"Weight Distribution in Top-Heavy Indices\",\n\t            \"datePublished\": \"2022-10-28T16:50:00+00:00\",\n\t            \"dateModified\": \"2023-02-10T18:30:21+00:00\",\n\t            \"mainEntityOfPage\": {\n\t                \"@id\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/traders-insight\\\/weight-distribution-in-top-heavy-indices\\\/\"\n\t            },\n\t            \"wordCount\": 750,\n\t            \"publisher\": {\n\t                \"@id\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/#organization\"\n\t            },\n\t            \"image\": {\n\t                \"@id\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/traders-insight\\\/weight-distribution-in-top-heavy-indices\\\/#primaryimage\"\n\t            },\n\t            \"thumbnailUrl\": \"https:\\\/\\\/www.ibkrcampusdev.wpengine.com\\\/campus\\\/wp-content\\\/uploads\\\/sites\\\/2\\\/2022\\\/10\\\/Picture1-24.png\",\n\t            \"keywords\": [\n\t                \"Amazon\",\n\t                \"Apple\",\n\t                \"stock indices\",\n\t                \"stocks\"\n\t            ],\n\t            \"articleSection\": [\n\t                \"IBKR Insights\",\n\t                \"North America\",\n\t                \"Region\",\n\t                \"Securities\",\n\t                \"Stocks\",\n\t                \"Text Articles\",\n\t                \"Traders' Insight\"\n\t            ],\n\t            \"inLanguage\": \"en-US\"\n\t        },\n\t        {\n\t            \"@type\": \"WebPage\",\n\t            \"@id\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/traders-insight\\\/weight-distribution-in-top-heavy-indices\\\/\",\n\t            \"url\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/traders-insight\\\/weight-distribution-in-top-heavy-indices\\\/\",\n\t            \"name\": \"Weight Distribution in Top-Heavy Indices | IBKR Campus US\",\n\t            \"isPartOf\": {\n\t                \"@id\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/#website\"\n\t            },\n\t            \"primaryImageOfPage\": {\n\t                \"@id\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/traders-insight\\\/weight-distribution-in-top-heavy-indices\\\/#primaryimage\"\n\t            },\n\t            \"image\": {\n\t                \"@id\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/traders-insight\\\/weight-distribution-in-top-heavy-indices\\\/#primaryimage\"\n\t            },\n\t            \"thumbnailUrl\": \"https:\\\/\\\/www.ibkrcampusdev.wpengine.com\\\/campus\\\/wp-content\\\/uploads\\\/sites\\\/2\\\/2022\\\/10\\\/Picture1-24.png\",\n\t            \"datePublished\": \"2022-10-28T16:50:00+00:00\",\n\t            \"dateModified\": \"2023-02-10T18:30:21+00:00\",\n\t            \"description\": \"Market capitalization weighted indices never have the opportunity to lose weight. 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