What is the distribution of the integral of GBM on a finite support?











up vote
0
down vote

favorite












From this topic:
Power of the integral of a Geometric Brownian motion
I know that the random variable:
$$
X = int_0^infty e^{aB_t-bt} dt
$$

has the Inverse-Gamma distribution with some parameters (I suppose the shape parameter is equal to $alpha = frac{2b}{a^2}$ and the scale parameter $beta = 1$), where $B_t$ is a Brownian Motion.



I wonder what is a distribution of the following random variable:
$$
X = int_t^T e^{aB_u-bu} du
$$

for given $t$ and $T$.










share|cite|improve this question


























    up vote
    0
    down vote

    favorite












    From this topic:
    Power of the integral of a Geometric Brownian motion
    I know that the random variable:
    $$
    X = int_0^infty e^{aB_t-bt} dt
    $$

    has the Inverse-Gamma distribution with some parameters (I suppose the shape parameter is equal to $alpha = frac{2b}{a^2}$ and the scale parameter $beta = 1$), where $B_t$ is a Brownian Motion.



    I wonder what is a distribution of the following random variable:
    $$
    X = int_t^T e^{aB_u-bu} du
    $$

    for given $t$ and $T$.










    share|cite|improve this question
























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      From this topic:
      Power of the integral of a Geometric Brownian motion
      I know that the random variable:
      $$
      X = int_0^infty e^{aB_t-bt} dt
      $$

      has the Inverse-Gamma distribution with some parameters (I suppose the shape parameter is equal to $alpha = frac{2b}{a^2}$ and the scale parameter $beta = 1$), where $B_t$ is a Brownian Motion.



      I wonder what is a distribution of the following random variable:
      $$
      X = int_t^T e^{aB_u-bu} du
      $$

      for given $t$ and $T$.










      share|cite|improve this question













      From this topic:
      Power of the integral of a Geometric Brownian motion
      I know that the random variable:
      $$
      X = int_0^infty e^{aB_t-bt} dt
      $$

      has the Inverse-Gamma distribution with some parameters (I suppose the shape parameter is equal to $alpha = frac{2b}{a^2}$ and the scale parameter $beta = 1$), where $B_t$ is a Brownian Motion.



      I wonder what is a distribution of the following random variable:
      $$
      X = int_t^T e^{aB_u-bu} du
      $$

      for given $t$ and $T$.







      probability-distributions distribution-theory gamma-distribution






      share|cite|improve this question













      share|cite|improve this question











      share|cite|improve this question




      share|cite|improve this question










      asked Nov 15 at 17:50









      MathMen

      1167




      1167



























          active

          oldest

          votes











          Your Answer





          StackExchange.ifUsing("editor", function () {
          return StackExchange.using("mathjaxEditing", function () {
          StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix) {
          StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
          });
          });
          }, "mathjax-editing");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "69"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          noCode: true, onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f3000025%2fwhat-is-the-distribution-of-the-integral-of-gbm-on-a-finite-support%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown






























          active

          oldest

          votes













          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes
















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Mathematics Stack Exchange!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          Use MathJax to format equations. MathJax reference.


          To learn more, see our tips on writing great answers.





          Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


          Please pay close attention to the following guidance:


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f3000025%2fwhat-is-the-distribution-of-the-integral-of-gbm-on-a-finite-support%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          Biblatex bibliography style without URLs when DOI exists (in Overleaf with Zotero bibliography)

          ComboBox Display Member on multiple fields

          Is it possible to collect Nectar points via Trainline?