consumer discretionary

inflation

s&p 500

tech

interest rates

portfolio construction

strategy

information technology

macroeconomics

software

technical analysis

stocks

ChatGPT can build a trading strategy, with help

Big hedge funds hire coders, but ChatGPT can code too… mostly.

Here’s What Happens When You Ask ChatGPT To Build A Trading Strategy

There’s a reason hedge funds hire analysts who can write code: they can build profitable trading strategies that run on autopilot. As it turns out, ChatGPT can write code too. So I tried to get it to build me a profitable strategy in TradingView.

I asked ChatGPT to write the Pine Script code for a bunch of strategies based on technical analysis – for example, the one in the chart. This strategy buys the S&P 500 when it finishes a week above its 21-week exponential [moving average](https://finimize.com/content/Q29udGVudFBpZWNlOjUwMTA=/how-to-use-moving-averages-trading-and-investing?) (EMA, yellow line), and moves back into US dollars when it finishes a week below it. It’s a simple trend-following strategy – the EMA is just a “rolling”, or continually updating, average of the past 21 weeks of price movement, with more weight on the more recent weeks. In other words, it’s more responsive to changes in buyer momentum than a simple moving average would be.

After ChatGPT gave me the code, I pasted it into the Pine Editor section on a fresh TradingView S&P 500 chart. I then clicked “add to chart”, and TradingView gave me… an error. I then copied and pasted that error back into ChatGPT so it could fix it. This back and forth went on for some time, until *eventually*, I got the code to work. So here it is:



I backtested the strategy in TradingView since the year 1883 – which is as far as the index’s data goes back. I also added in a trading fee of 0.1% of the position size per trade to make it seem more like real-world trading (this would depend on your broker). A $1,000 investment in the strategy would’ve earned over $500,000 in profit over the past 140 years, or grown by about 4.6% per year.

Of course, I tried to improve the strategy by making it more complicated – and that’s when ChatGPT didn’t code so well. But here’s the good news: you’d have earned 4.95% a year by simply buying and holding the S&P 500 over the same period.



Quick Take

encryptedEmail

planSlug

slugOrId

ContentPieceQuery

viewer

authorization

content

SingleContentPiece_viewer

webSubscriptions

contentPiece

mostPopularTags

features

query ContentPieceQuery(
  $slugOrId: String
  $encryptedEmail: String
  $planSlug: String
) {
  viewer {
    authorization {
      roles {
        isAnonymous
      }
      ...SingleContentPiece_authorization
    }
    ...SingleContentPiece_viewer_4uP6yi
    content(encryptedEmail: $encryptedEmail) {
      ...SingleContentPiece_content
      contentPiece(slugOrId: $slugOrId) {
        __typename
        ...SingleContentPiece_contentPiece
        canonicalLink
        id
      }
    }
    id
  }
}

fragment AccessibleImage_accessibleImage on AccessibleURLImage {
  full
  altText
}

fragment AdvertWrapper_activeProductAdvert on ProductAdvert {
  id
  advertHandle
  destinationUrl
  sponsoringCompany {
    name
    id
  }
}

fragment AnonymousPaywall_viewer_2HyoJ4 on Viewer {
  webSubscriptions {
    defaultWebPlan {
      ...PremiumAccountPromotionPanel_webPaymentPlan_2HyoJ4
    }
  }
}

fragment AudioOnlyBanner_contentPiece on ContentPieceInterface {
  __isContentPieceInterface: __typename
  headerImage {
    ...ServerImage_image
  }
  title
}

fragment AuthorLinkWrapper_author on Author {
  slug
  isActive
}

fragment Avatar_image on URLImage {
  original
}

fragment BannerAdvert_activeProductAdvert on ProductAdvert {
  title
  description
  destinationUrl
  sponsoringCompany {
    name
    id
  }
  wideImage {
    ...AccessibleImage_accessibleImage
  }
  narrowImage {
    ...AccessibleImage_accessibleImage
  }
  ...AdvertWrapper_activeProductAdvert
}

fragment Block_block on ContentPieceBlock {
  __isContentPieceBlock: __typename
  __typename
  ... on TextBlock {
    id
    ...TextBlock_block
  }
  ... on ImageBlock {
    id
    ...ImageBlock_block
  }
  ... on QuoteBlock {
    id
    ...QuoteBlock_block
  }
}

fragment ContentAuthorAndMetadata_author on Author {
  id
  byline
  profilePicture {
    ...Avatar_image
  }
  ...AuthorLinkWrapper_author
}

fragment ContentDownloadBlock_authorization on Authorization {
  roles {
    isB2bUser
  }
}

fragment ContentDownloadBlock_contentPiece on ContentPieceInterface {
  __isContentPieceInterface: __typename
  ...DownloadContentDropdown_contentPiece
  ...LicenseContentButton_contentPiece
  isAvailableToProducts
}

fragment ContentFooter_contentPiece on ContentPieceInterface {
  __isContentPieceInterface: __typename
  id
  title
  deepLink
  canonicalLink
  slug
  hasChapters
  chapters {
    __typename
    id
    slug
  }
  mostRelevantTags(first: 30) {
    edges {
      node {
        __typename
        ...Tag_tag
        ... on Node {
          __isNode: __typename
          id
        }
      }
    }
  }
}

fragment ContentHeaderDetails_authorization on Authorization {
  roles {
    isB2bUser
  }
}

fragment ContentHeaderDetails_contentPiece on ContentPieceInterface {
  __isContentPieceInterface: __typename
  ...ListenButton_contentPiece
  ...ContentPieceBookmarkIcon_contentPiece
  ...ContentDownloadBlock_contentPiece
  id
  title
  deepLink
  canonicalLink
  slug
  hasChapters
  chapters {
    __typename
    id
    slug
  }
}

fragment ContentHeader_contentPiece on ContentPieceInterface {
  __isContentPieceInterface: __typename
  ...DefaultContentHeader_contentPiece
  ...EvergreenContentHeader_contentPiece
  contentPieceType {
    name
  }
}

fragment ContentMetadata_contentPiece on ContentPieceInterface {
  __isContentPieceInterface: __typename
  consumptionTime
  dateUpdatedDisplay
  contentPieceType {
    isEvergreen
  }
  author {
    byline
    ...AuthorLinkWrapper_author
    id
  }
}

fragment ContentPieceBookmarkIcon_contentPiece on ContentPiece {
  id
  isBookmarked
  title
}

fragment ContentPieceSEO_contentPiece on ContentPieceInterface {
  __isContentPieceInterface: __typename
  title
  imageForSeo: headerImage {
    url: full
  }
  subtitle
  firstPublishedAt
  id
  ... on PublicContentPiece {
    globalContentPieceId
  }
  byline
  seoTitle
  searchDescription
  canonicalLink
}

fragment ContentPieceSponsor_contentPiece on ContentPieceInterface {
  __isContentPieceInterface: __typename
  sponsoringCompany {
    id
    name
    link
    logo {
      ...ServerImage_image
    }
  }
}

fragment DefaultContentHeader_contentPiece on ContentPieceInterface {
  __isContentPieceInterface: __typename
  ...ContentHeaderDetails_contentPiece
  ...AudioOnlyBanner_contentPiece
  ...ContentMetadata_contentPiece
  id
  title
  headerImage {
    ...ServerImage_image
  }
  author {
    ...AuthorLinkWrapper_author
    ...ContentAuthorAndMetadata_author
    id
  }
}

fragment DownloadContentDropdownContentPieceRefetch_viewer_1QxYRk on Viewer {
  contentPieceTranslation: contentPiece(slugOrId: $slugOrId) {
    __typename
    id
    title
    isAvailableToProducts
    blocks {
      __typename
      ...DownloadContentDropdown_blocks
      ... on Node {
        __isNode: __typename
        id
      }
    }
    keyInsightsBlocks {
      id
      ...DownloadContentDropdown_blocks
    }
  }
}

fragment DownloadContentDropdown_blocks on ContentPieceBlock {
  __isContentPieceBlock: __typename
  ... on TextBlock {
    textMarkdown
  }
}

fragment DownloadContentDropdown_contentPiece on ContentPieceInterface {
  __isContentPieceInterface: __typename
  localeMapping {
    languageCode
    contentPieceId
  }
}

fragment EvergreenContentHeader_authorization on Authorization {
  roles {
    isB2bUser
  }
}

fragment EvergreenContentHeader_contentPiece on ContentPieceInterface {
  __isContentPieceInterface: __typename
  ...ContentMetadata_contentPiece
  ...ListenButton_contentPiece
  ...ContentPieceSponsor_contentPiece
  ...ContentPieceBookmarkIcon_contentPiece
  ...ContentDownloadBlock_contentPiece
  canonicalLink
  id
  deepLink
  title
  slug
  hasChapters
  chapters {
    __typename
    id
    slug
  }
  headerImage {
    ...ServerImage_image
  }
}

fragment ImageBlock_block on ImageBlock {
  image {
    ...ServerImage_image
  }
  alt
  caption
  link
}

fragment KeyInsightsBlock_contentPiece on ContentPieceInterface {
  __isContentPieceInterface: __typename
  keyInsightsBlocks {
    id
    textMarkdown
  }
}

fragment KeyInsightsCarousel_contentPiece on ContentPieceInterface {
  __isContentPieceInterface: __typename
  keyInsightsBlocks {
    id
    textMarkdown
  }
}

fragment KeyInsights_contentPiece on ContentPieceInterface {
  __isContentPieceInterface: __typename
  ...KeyInsightsCarousel_contentPiece
  ...KeyInsightsBlock_contentPiece
  keyInsightsBlocks {
    id
    textMarkdown
  }
}

fragment LicenseContentButton_contentPiece on ContentPieceInterface {
  __isContentPieceInterface: __typename
  id
  title
  isAvailableToProducts
}

fragment ListenButton_contentPiece on ContentPieceInterface {
  __isContentPieceInterface: __typename
  id
  title
  trackingTitle
  subtitle
  readingTime
  isPremium
  hasBlocks
  hasChapters
  hasAudio
  contentPieceType {
    name
    trackingName
  }
  ...AudioOnlyBanner_contentPiece
}

fragment LoggedInPaywall_viewer_2HyoJ4 on Viewer {
  webSubscriptions {
    defaultWebPlan {
      ...PremiumAccountPromotionPanel_webPaymentPlan_2HyoJ4
    }
  }
}

fragment MainContentSection_contentPiece on ContentPieceInterface {
  __isContentPieceInterface: __typename
  ...ContentPieceSEO_contentPiece
  ...KeyInsights_contentPiece
  ...ContentHeader_contentPiece
  ...ContentFooter_contentPiece
  title
  headerImage {
    ...ServerImage_image
  }
  globalContentPieceId
  trackingTitle
  subtitle
  firstPublishedAt
  readingTime
  isPremium
  deepLink
  hasBlocks
  hasChapters
  hasAudio
  id
  canonicalLink
  byline
  contentPieceType {
    name
    trackingName
  }
  blocks {
    __typename
    ...Block_block
    ... on Node {
      __isNode: __typename
      id
    }
  }
}

fragment MostPopularTags_tags on GenericTagConnection {
  edges {
    node {
      __typename
      ... on AssetClassTag {
        slug
      }
      ... on ContentTag {
        slug
      }
      ... on GeographyTag {
        slug
      }
      ...Tag_tag
      ... on Node {
        __isNode: __typename
        id
      }
    }
  }
}

fragment Navigation_authorization on Authorization {
  roles {
    isB2bUser
  }
}

fragment Navigation_tags on GenericTagConnection {
  ...MostPopularTags_tags
}

fragment PaywallBanner_contentPieceType on ContentPieceType {
  isAvailableForFreemium
}

fragment PaywallBanner_viewer_2HyoJ4 on Viewer {
  ...AnonymousPaywall_viewer_2HyoJ4
  ...LoggedInPaywall_viewer_2HyoJ4
}

fragment PremiumAccountPromotionPanel_webPaymentPlan_2HyoJ4 on WebPaymentPlan {
  amount
  currency
  currencySymbol
  interval
  promotionApplied(slug: $planSlug) {
    stripeDiscount {
      discountPct
      discountAmount
      id
    }
    id
  }
}

fragment QuoteBlock_block on QuoteBlock {
  quote
  caption
}

fragment ServerImage_image on URLImage {
  full
}

fragment SingleContentPiece_authorization on Authorization {
  ...authorization_authorization
  ...ContentHeaderDetails_authorization
  ...ContentDownloadBlock_authorization
  ...EvergreenContentHeader_authorization
  roles {
    isPreviewingContentAllowance
    isPreviewing
    isAnonymous
    hasPremiumSubscription
    isFreemium
  }
}

fragment SingleContentPiece_content on Content {
  ...authorization_content
  anonymousUserHasPremium
}

fragment SingleContentPiece_contentPiece on ContentPieceInterface {
  __isContentPieceInterface: __typename
  ...AudioOnlyBanner_contentPiece
  ...authorization_contentPiece
  ...MainContentSection_contentPiece
  globalContentPieceId
  trackingTitle
  isPremium
  hasBlocks
  hasChapters
  hasAudio
  contentPieceType {
    name
    trackingName
    isAvailableForFreemium
    ...PaywallBanner_contentPieceType
  }
  chapters {
    __typename
    id
    slug
  }
  activeProductAdvert {
    ...BannerAdvert_activeProductAdvert
    id
  }
}

fragment SingleContentPiece_viewer_4uP6yi on Viewer {
  ...PaywallBanner_viewer_2HyoJ4
  ...DownloadContentDropdownContentPieceRefetch_viewer_1QxYRk
  mostPopularTags(first: 10) {
    ...Navigation_tags
  }
  authorization {
    ...Navigation_authorization
  }
  features
}

fragment Tag_tag on GenericTag {
  __isGenericTag: __typename
  __typename
  ... on AssetClassTag {
    name
    slug
  }
  ... on GeographyTag {
    name
    slug
  }
  ... on ContentTag {
    name
    slug
  }
}

fragment TextBlock_block on TextBlock {
  textMarkdown
}

fragment authorization_authorization on Authorization {
  roles {
    isPreviewingContentAllowance
    isPreviewing
    isAnonymous
    hasPremiumSubscription
    isFreemium
  }
}

fragment authorization_content on Content {
  anonymousUserHasPremium
}

fragment authorization_contentPiece on ContentPieceInterface {
  __isContentPieceInterface: __typename
  isPremium
  contentPieceType {
    isAvailableForFreemium
  }
}


Here’s What Happens When You Ask ChatGPT To Build A Trading Strategy

BECOME A SMARTER INVESTOR