{"id":59959,"date":"2020-09-18T09:35:07","date_gmt":"2020-09-18T13:35:07","guid":{"rendered":"https:\/\/ibkrcampus.com\/?p=59959"},"modified":"2022-11-21T09:46:20","modified_gmt":"2022-11-21T14:46:20","slug":"trading-index-trin-formula-calculation-strategy-in-python-part-ii","status":"publish","type":"post","link":"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/trading-index-trin-formula-calculation-strategy-in-python-part-ii\/","title":{"rendered":"Trading Index (TRIN): Formula, Calculation &#038; Strategy in Python &#8211; Part II"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><em>Learn the definition of TRIN with <a href=\"\/campus\/ibkr-quant-news\/trading-index-trin-formula-calculation-strategy-in-python\/\">Part I<\/a> in this series.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"example-of-trin\">Example of TRIN<\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" data-src=\"https:\/\/lh3.googleusercontent.com\/vHAPy7osVy1tAQGYBp0j1XgG3Yq8m41uXYTP_fVktugnzzjGvgZZjgI_vBJgC8bOg7HV-QbNgmp_OyJXvvwC7eYZ-UsgTPhrsdNT0tEJZZv-9tSauAh1NUGWij745AZWH6ynnJ-t\" alt=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/corporatefinanceinstitute.com\/resources\/knowledge\/trading-investing\/trin-indicator-technical-analysis\/\" target=\"_blank\" rel=\"noreferrer noopener\">Source: CFI<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">According to the example above, a rising TRIN indicates a bearish market, whereas a falling TRIN indicates a bullish market. The example above shows that the traders who bought in the market when the TRIN value was above 3.00 fared well because it was an oversold situation. The traders in the oversold situation must have got the benefit from a rise in the supply of stocks when they bought. Also, the traders who sold in the market based on values below 0.50 in which there was an overbought condition, must not have had a profitable time.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The&nbsp;<a href=\"https:\/\/blog.quantinsti.com\/moving-average-trading-strategies\/\">SMA or moving average<\/a>&nbsp;smooths the data series and makes it come into a range that is needed to generate an overbought or oversold signal or value in the market.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We will now find out the calculation of TRIN value with the help of Python codes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"calculation-of-trin-in-python\">Calculation of TRIN in Python<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Let us see how to calculate the TRIN value with&nbsp;<a href=\"https:\/\/quantra.quantinsti.com\/course\/python-for-trading\" target=\"_blank\" rel=\"noreferrer noopener\">Python<\/a>&nbsp;to analyse the condition of the market. Although if you wish, you can learn more with our blog article on&nbsp;<a href=\"https:\/\/blog.quantinsti.com\/build-technical-indicators-in-python\/\">building technical indicators in Python<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Coming to this calculation for TRIN value, we will first fetch the data of price and volume for the stocks. We have taken S&amp;P500 stocks for our calculation with python code.<\/p>\n\n\n\n<p style=\"background-color:#fcfcdb;font-size:11px\" class=\"has-background\">\n# Import libraries<br>\nimport pandas as pd<br>\nimport numpy as np<br><br>\n\n# Fetch data<br>\ndef read_data(filename):<br>\ndata = pd.read_csv(filename, index_col=0)<br>\ndata = data.dropna()<br>\nreturn data<br>\nvolume = read_data(&#8216;volume.csv&#8217;)<br>\nprices = read_data(&#8216;stock_prices.csv&#8217;)<br>\nsp500 = read_data(&#8216;S&amp;P 500 data.csv&#8217;)<br><br>\n\n# Print the first two rows of the prices dataframe<br>\nprices.head(2)<br><br>\n\n# Print the first two rows of the volume dataframe<br>\nvolume.head(2)<br><br>\n\n# List the stock names<br>\nstocks = prices.columns\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Now, we will find out if today\u2019s close price is higher than yesterday&#8217;s close price or not. If today\u2019s close price is higher than the previous close price, the output will show \u201c1\u201d and if otherwise, then the output will be \u201co\u201d for the particular day. We will print this direction for one stock, that is, Amazon (AMZN) so as to see our output.<\/p>\n\n\n\n<p style=\"background-color:#fcfcdb;font-size:11px\" class=\"has-background\">\n# Generate direction column for every stock with conditions if today&#8217;s close price > previous close price,<br>\n# if today&#8217;s close price < previous close price<br>\nfor col in stocks:<br>\ndirection_col = col + &#8216;_direction&#8217;<br>\nprices[direction_col] = np.where(prices[col] > prices[col].shift(1), 1, 0)<br>\nprices[direction_col] = np.where(<br>\nprices[col] == prices[col].shift(1), -1, prices[direction_col])<br><br>\n\n# Print the direction column for one stock<br>\nprices[[&#8216;AMZN&#8217;, &#8216;AMZN_direction&#8217;]].head()<br>\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Output:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2020\/09\/amzn.png\" alt=\"\" class=\"wp-image-59974 lazyload\" width=\"567\" height=\"384\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 567px; aspect-ratio: 567\/384;\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Stay tuned for the next installment in which the author will find out the number of advancing stocks.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Visit QuantInsti for additional ready-to-use code: <a href=\"https:\/\/blog.quantinsti.com\/trin\/\">https:\/\/blog.quantinsti.com\/trin\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Learn how to calculate TRIN values with Python. Download ready-to-use functions to code in pandas and numpy.<\/p>\n","protected":false},"author":368,"featured_media":28581,"comment_status":"closed","ping_status":"open","sticky":true,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[339,343,349,338,350,341,344],"tags":[851,1383,1225,1224,595,494,1291,8328,8327],"contributors-categories":[13654],"class_list":["post-59959","post","type-post","status-publish","format-standard","has-post-thumbnail","category-data-science","category-programing-languages","category-python-development","category-ibkr-quant-news","category-quant-asia-pacific","category-quant-development","category-quant-regions","tag-algo-trading","tag-market-sentiment","tag-numpy","tag-pandas","tag-python","tag-quant","tag-technical-analysis","tag-trading-signal","tag-trin-indicator","contributors-categories-quantinsti"],"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 v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Trading Index (TRIN): Formula, Calculation &#038; Strategy in Python &#8211; Part II<\/title>\n<meta name=\"description\" content=\"Learn how to calculate TRIN values with Python. 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