<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019dd4cf-e10a-7da6-b69b-3b99ca976238,g:35652bfb-7117-42ba-973c-9250c59ac867-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://pwp.com/role/Cover" xlink:type="simple" xlink:href="pwp-20260501.xsd#Cover"/>
  <link:presentationLink xlink:role="http://pwp.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019dd4cf-e10a-7c37-97a2-0ab2e1e49eac" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_DocumentType_019dd4cf-e10a-7c37-97a2-0ab2e1e49eac" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019dd4cf-e10a-7681-a915-27d0a2e17083" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_DocumentPeriodEndDate_019dd4cf-e10a-7681-a915-27d0a2e17083" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019dd4cf-e10a-7d7b-a090-cd3fec28c1f9" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_EntityFileNumber_019dd4cf-e10a-7d7b-a090-cd3fec28c1f9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019dd4cf-e10a-7bbe-8cd1-c9824b0caa68" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_EntityRegistrantName_019dd4cf-e10a-7bbe-8cd1-c9824b0caa68" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019dd4cf-e10a-7107-936c-637b6cc944d2" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019dd4cf-e10a-7107-936c-637b6cc944d2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019dd4cf-e10a-7503-a2e7-f7bb24ba0747" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_EntityTaxIdentificationNumber_019dd4cf-e10a-7503-a2e7-f7bb24ba0747" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019dd4cf-e10a-78fc-9974-6e8145cc7dc5" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_EntityAddressAddressLine1_019dd4cf-e10a-78fc-9974-6e8145cc7dc5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019dd4cf-e10a-7983-bd95-82530199e0b2" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_EntityAddressCityOrTown_019dd4cf-e10a-7983-bd95-82530199e0b2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019dd4cf-e10a-77fa-94b4-b060e96d2f2b" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_EntityAddressStateOrProvince_019dd4cf-e10a-77fa-94b4-b060e96d2f2b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019dd4cf-e10a-775d-b359-31259b3fe5d7" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_EntityAddressPostalZipCode_019dd4cf-e10a-775d-b359-31259b3fe5d7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019dd4cf-e10a-71f3-8978-b91883ea28dc" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_CityAreaCode_019dd4cf-e10a-71f3-8978-b91883ea28dc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019dd4cf-e10a-7ded-970a-0feea9d48eca" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_LocalPhoneNumber_019dd4cf-e10a-7ded-970a-0feea9d48eca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019dd4cf-e10a-7ff8-b37a-2832cb48b5a7" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_WrittenCommunications_019dd4cf-e10a-7ff8-b37a-2832cb48b5a7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019dd4cf-e10a-7d0e-b2c4-74938fe3faf4" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_SolicitingMaterial_019dd4cf-e10a-7d0e-b2c4-74938fe3faf4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019dd4cf-e10a-7917-87b3-152e5aa6aaa9" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_PreCommencementTenderOffer_019dd4cf-e10a-7917-87b3-152e5aa6aaa9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019dd4cf-e10a-76b6-9007-0b818a820b08" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019dd4cf-e10a-76b6-9007-0b818a820b08" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019dd4cf-e10a-73f7-8706-c6a46e3de71d" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_Security12bTitle_019dd4cf-e10a-73f7-8706-c6a46e3de71d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019dd4cf-e10a-7d5c-85f7-f8cc57594182" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_TradingSymbol_019dd4cf-e10a-7d5c-85f7-f8cc57594182" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019dd4cf-e10a-7d62-934c-8530edce490e" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_SecurityExchangeName_019dd4cf-e10a-7d62-934c-8530edce490e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019dd4cf-e10a-7b8e-8bef-75254ce139e8" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_EntityEmergingGrowthCompany_019dd4cf-e10a-7b8e-8bef-75254ce139e8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019dd4cf-e10a-7d4e-b5be-f52ee5444b97" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_EntityCentralIndexKey_019dd4cf-e10a-7d4e-b5be-f52ee5444b97" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019dd4cf-e10a-7261-a119-6654bf52bcc6" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CityAreaCode"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019dd4cf-e10a-7626-80d9-1454870b11b6" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LocalPhoneNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019dd4cf-e10a-71db-8ed2-21c0114242dd" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019dd4cf-e10a-70d3-b7f3-964e814cc446" xlink:to="loc_dei_AmendmentFlag_019dd4cf-e10a-71db-8ed2-21c0114242dd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
