AltMountain

Ark Invest

St. Petersburg, FL · CRD 169525
Hedge fund manager

Ark Invest is an SEC-registered investment adviser based in St. Petersburg, FL that reports managing 2 hedge funds on Form ADV. It reports $16.0 billion in regulatory assets under management. Its private funds, of all types, hold $1.3 billion in gross assets. Its disclosed U.S. stock holdings returned an estimated +11.4% 2026 YTD through Jun 30 (S&P 500: +9.5%), based on 13F filings. Over a longer period they returned an estimated +86.4% from Q3 2024 to Q2 2026, compared with +37.2% for the S&P 500, based on 13F filings.

Regulatory assets under management
$16.0 billionForm ADV Item 5.F
Gross assets of private funds
$1.3 billionAll private fund types, Form ADV
Hedge funds managed
27 private funds in total
Employees
58Form ADV Item 5.A
Registration
SEC-registered adviserCRD 169525
Latest Form ADV
08/24/2026Disciplinary disclosures: none reported

Estimated 13F portfolio performance

Est. 2026 YTD+11.4%Through Q2 2026 · S&P 500 +9.5%
Est. 2-year return+86.4%Q3 2024 – Q2 2026
S&P 500+37.2%Same quarters, price only
13F holdings$15.4 billion189 positions, 2026-06-30
$100$143$186Q3 2024Q1 2025Q3 2025Q1 202613F est. $186S&P 500 $137
QuarterEst. 13F returnS&P 500
Q2 2026+25.5%+14.8%
Q1 2026-11.2%-4.6%
Q4 2025-6.4%+2.4%
Q3 2025+16.7%+7.8%
Q2 2025+37.0%+10.4%
Q1 2025-14.4%-4.5%
Q4 2024+20.3%+2.1%
Q3 2024+8.7%+5.4%

Estimate of the firm's disclosed long U.S. stock portfolio from its quarterly 13F filings, holding each quarter-end portfolio to the next quarter-end at prices implied by all 13F filers. It is a price return before dividends and fees, ignores shorts, options, bonds, cash and trading within the quarter, and is not the return of any fund. Disclosures

Largest disclosed holdings

  • Tesla Mtrs Inc Com$1.2 billion
  • Advanced Micro Devices Inc Com$822.8 million
  • 84615q103$765.1 million
  • Tempus Ai$580.6 million
  • Robinhood Mkts Inc Com CL A$525.1 million
  • Crispr Therapeutics AG$516.0 million
  • Shopify Inc CL A$474.5 million
  • Twist Bioscience Corp$468.1 million
  • 10X Genomics$383.5 million
  • Amazon Com Inc Com$379.2 million

As of 2026-06-30, from 13F filing by ARK Investment Management LLC.

Venture capital funds filing Form D (3)

Matched to this firm by the fund names and related persons in each Form D. The list may be incomplete.

Private investment funds filing Form D (4)

Matched to this firm by the fund names and related persons in each Form D. The list may be incomplete.

Private funds reported on Form ADV (2)

As reported in the adviser's Form ADV filed Oct 10, 2024. Funds also listed from Form D are shown above.

From SEC filings. Firm data comes from the SEC's Form ADV data as of Oct 2, 2026; performance estimates come from Form 13F. AltMountain has not verified this information, and it is not an offer, solicitation or recommendation. Full disclosures