Simplex Trading, LLC Options Holdings

Simplex Trading, LLC

  • $175 Billion
  • Q2 2025

Options Holdings Table

Stock Option Type Value Options Held Last Trade Trade History
Seres Therapeutics Inc
CALL
$732,000
65.9K
Q2 2025
New holding
Seres Therapeutics Inc
PUT
$16,000
1.5K
Q2 2025
New holding
Mercury Genl Corp New
CALL
$1.76 Million
26.1K
Q2 2025
Reduced 37.11%
Mercury Genl Corp New
PUT
$87,000
1.3K
Q2 2025
Reduced 89.6%
Pediatrix Medical Group Inc
CALL
$48,000
3.4K
Q2 2025
Reduced 80.57%
Madrigal Pharmaceuticals Inc
CALL
$4.45 Million
14.7K
Q2 2025
Reduced 5.77%
Madrigal Pharmaceuticals Inc
PUT
$1.57 Million
5.2K
Q2 2025
Reduced 42.22%
Mdu Res Group Inc
CALL
$11,000
700
Q2 2025
Reduced 79.41%
Mediwound LTD
CALL
$19,000
1K
Q2 2025
Added 150.0%
Mediwound LTD
PUT
$40,000
2.1K
Q2 2025
Added 10.53%
Mimedx Group Inc
PUT
$173,000
28.4K
Q2 2025
Added 107.3%
Spdr S&P Midcap 400 ETF Tr
PUT
$2.32 Million
4.1K
Q2 2025
Reduced 75.15%
Mayville Engr CO Inc
CALL
$1,000
100
Q2 2025
New holding
Medifast Inc
CALL
$247,000
17.6K
Q2 2025
Added 10.0%
Medifast Inc
PUT
$91,000
6.5K
Q2 2025
Reduced 20.73%
Medpace Hldgs Inc
CALL
$62,000
200
Q2 2025
Reduced 84.62%
Medpace Hldgs Inc
PUT
$2.48 Million
7.9K
Q2 2025
Added 618.18%
Montrose Environmental Group
CALL
$1.68 Million
76.7K
Q2 2025
Added 7.57%
Montrose Environmental Group
PUT
$753,000
34.4K
Q2 2025
Reduced 51.75%
Methode Electrs Inc
CALL
$250,000
26.3K
Q2 2025
Reduced 60.45%
Methode Electrs Inc
PUT
$330,000
34.8K
Q2 2025
Added 2220.0%
Methanex Corp
CALL
$95,000
2.9K
Q2 2025
Added 61.11%
Methanex Corp
PUT
$251,000
7.6K
Q2 2025
Added 484.62%
Mercer Intl Inc
CALL
$24,000
7K
Q1 2025
Reduced 87.78%
Mercer Intl Inc
PUT
$29,000
8.4K
Q1 2025
Reduced 77.6%
Mesoblast LTD
CALL
$356,000
32.7K
Q2 2025
Added 21.56%
Mesoblast LTD
PUT
$409,000
37.6K
Q2 2025
Added 63.48%
Ramaco Res Inc
CALL
$758,000
57.7K
Q2 2025
Reduced 22.13%
Ramaco Res Inc
PUT
$3.64 Million
277K
Q2 2025
Added 5337.25%
Listed Fds Tr
CALL
$68,000
6.3K
Q2 2025
Added 6.78%
Mfa Finl Inc
CALL
$51,000
5.4K
Q2 2025
Reduced 68.42%
Mfa Finl Inc
PUT
$535,000
56.6K
Q2 2025
Added 449.51%
Manulife Finl Corp
CALL
$1.28 Million
40.2K
Q2 2025
Reduced 16.25%
Manulife Finl Corp
PUT
$140,000
4.4K
Q2 2025
Reduced 74.42%
Mizuho Financial Group Inc
CALL
$55,000
10K
Q2 2025
Added 112.77%
Mizuho Financial Group Inc
PUT
$2,000
500
Q2 2025
Added 400.0%
Midcap Financial Invstmnt CO
CALL
$388,000
30.8K
Q2 2025
Reduced 30.0%
Midcap Financial Invstmnt CO
PUT
$15,000
1.2K
Q2 2025
Added 50.0%
Medallion Finl Corp
CALL
$229,000
24.1K
Q2 2025
Added 249.28%
Medallion Finl Corp
PUT
$2,000
300
Q2 2025
Reduced 93.62%
Mistras Group Inc
CALL
$1.49 Million
186K
Q2 2025
Reduced 34.69%
Mistras Group Inc
PUT
$1.72 Million
214K
Q2 2025
Added 172.43%
Magna Intl Inc
CALL
$3.91 Million
101K
Q2 2025
Reduced 26.08%
Magna Intl Inc
PUT
$4.93 Million
128K
Q2 2025
Added 111.61%
Magic Software Enterprises L
CALL
$42,000
2.2K
Q1 2025
Added 2100.0%
Magic Software Enterprises L
PUT
$875,000
45.8K
Q2 2025
Added 0.22%
Magnite Inc
CALL
$6.56 Million
272K
Q2 2025
Added 9.15%
Magnite Inc
PUT
$4.36 Million
181K
Q2 2025
Added 113.85%
Macrogenics Inc
CALL
$15,000
12.9K
Q2 2025
Added 24.04%

Summary

  • Portfolio
  • No. of Stocks 9,904
  • Current Value $175 Billion
  • Prior Value $156 Billion
  • Filing
  • Period Q2 2025
  • Filing Date August 05, 2025
  • Form Type 13F-HR
  • Activity in Q2 2025
  • New Purchases 905 stocks
  • Additional Purchases 800 stocks
  • Sold out of 0 stocks
  • Reduced holdings in 715 stocks
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