Ken Griffin Options Holdings

Citadel Advisors LLC

  • $559 Billion
  • Q4 2024

Options Holdings Table

Stock Option Type Value Options Held Last Trade Trade History
MPW
Medical Properties Trust Inc

Real Estate
PUT
$13.3 Million
3.36M
Q4 2024
Reduced 5.93%
MED
Medifast Inc

Consumer Cyclical
CALL
$2.5 Million
142K
Q4 2024
Added 209.55%
MED
Medifast Inc

Consumer Cyclical
PUT
$1.2 Million
68.1K
Q4 2024
Added 209.55%
MEDP
Medpace Holdings, Inc.

Healthcare
CALL
$5.75 Million
17.3K
Q4 2024
Added 35.55%
MEDP
Medpace Holdings, Inc.

Healthcare
PUT
$9.5 Million
28.6K
Q4 2024
Added 35.55%
Mei Pharma Inc
CALL
$0
400
Q4 2024
New holding
Mei Pharma Inc
PUT
$0
12.6K
Q4 2024
New holding
MGTX
Meira G Tx Holdings PLC

Healthcare
CALL
$1,000
300
Q4 2024
Reduced 0.65%
MGTX
Meira G Tx Holdings PLC

Healthcare
PUT
$187,000
30.8K
Q4 2024
Reduced 0.65%
MLCO
Melco Resorts & Entertainment LTD

Consumer Cyclical
CALL
$5.04 Million
870K
Q4 2024
Added 10.77%
MBWM
Mercantile Bank Corp

Financial Services
CALL
$35,000
800
Q4 2024
Added 20.0%
MBWM
Mercantile Bank Corp

Financial Services
PUT
$26,000
600
Q4 2024
Added 20.0%
MERC
Mercer International Inc.

Basic Materials
CALL
$3.06 Million
471K
Q4 2024
Reduced 60.56%
MERC
Mercer International Inc.

Basic Materials
PUT
$432,000
66.5K
Q4 2024
Reduced 60.56%
MBIN
Merchants Bancorp

Financial Services
CALL
$69,000
1.9K
Q4 2024
Added 52.63%
MBIN
Merchants Bancorp

Financial Services
PUT
$211,000
5.8K
Q4 2024
Added 52.63%
MCY
Mercury General Corp

Financial Services
CALL
$518,000
7.8K
Q4 2024
Added 33.33%
MCY
Mercury General Corp

Financial Services
PUT
$159,000
2.4K
Q4 2024
Added 33.33%
MRCY
Mercury Systems Inc

Industrials
CALL
$1.92 Million
45.7K
Q4 2024
Reduced 24.33%
MRCY
Mercury Systems Inc

Industrials
PUT
$1.07 Million
25.5K
Q4 2024
Reduced 24.33%
MREO
Mereo Biopharma Group PLC

Healthcare
CALL
$293,000
83.9K
Q4 2024
Reduced 14.35%
MREO
Mereo Biopharma Group PLC

Healthcare
PUT
$340,000
97.3K
Q4 2024
Reduced 14.35%
MLNK
Meridian Link, Inc.

Technology
CALL
$107,000
5.2K
Q4 2024
Added 25.0%
MLNK
Meridian Link, Inc.

Technology
PUT
$10,000
500
Q4 2024
Added 25.0%
MMSI
Merit Medical Systems Inc

Healthcare
CALL
$1.19 Million
12.3K
Q4 2024
Reduced 87.18%
MMSI
Merit Medical Systems Inc

Healthcare
PUT
$48,000
500
Q4 2024
Reduced 87.18%
MTH
Meritage Homes Corp

Consumer Cyclical
CALL
$938,000
6.1K
Q4 2024
Added 14.42%
MTH
Meritage Homes Corp

Consumer Cyclical
PUT
$3.78 Million
24.6K
Q4 2024
Added 14.42%
MRSN
Mersana Therapeutics, Inc.

Healthcare
CALL
$65,000
45.9K
Q4 2024
Reduced 64.34%
MRSN
Mersana Therapeutics, Inc.

Healthcare
PUT
$13,000
9.7K
Q4 2024
Reduced 64.34%
MRUS
Merus N.V.

Healthcare
CALL
$206,000
4.9K
Q4 2024
Reduced 15.0%
MRUS
Merus N.V.

Healthcare
PUT
$714,000
17K
Q4 2024
Reduced 15.0%
MESA
Mesa Air Group Inc

Industrials
CALL
$58,000
47.3K
Q4 2024
Added 186.67%
MSB
Mesabi Trust

Basic Materials
CALL
$458,000
16.3K
Q4 2024
Reduced 96.77%
MSB
Mesabi Trust

Basic Materials
PUT
$2,000
100
Q4 2024
Reduced 96.77%
Mesoblast LTD
CALL
$0
289K
Q4 2024
Added 124.76%
Mesoblast LTD
PUT
$0
117K
Q4 2024
Added 124.76%
MTA
Metalla Royalty & Streaming Ltd.

Basic Materials
CALL
$14,000
5.9K
Q4 2024
Reduced 40.37%
MTA
Metalla Royalty & Streaming Ltd.

Basic Materials
PUT
$48,000
19.5K
Q4 2024
Reduced 40.37%
TMST
Timken Steel Corp

Basic Materials
CALL
$232,000
10.8K
Q4 2024
Added 200.0%
TMST
Timken Steel Corp

Basic Materials
PUT
$6,000
300
Q4 2024
Added 200.0%
MEOH
Methanex Corp

Basic Materials
CALL
$474,000
9.5K
Q4 2024
Added 64.84%
MEOH
Methanex Corp

Basic Materials
PUT
$1.05 Million
21.1K
Q4 2024
Added 64.84%
MEI
Methode Electronics Inc

Technology
CALL
$139,000
11.8K
Q4 2024
Added 157.89%
MEI
Methode Electronics Inc

Technology
PUT
$115,000
9.8K
Q4 2024
Added 157.89%
MCBS
Metro City Bankshares, Inc.

Financial Services
CALL
$115,000
3.6K
Q4 2024
Reduced 27.91%
MCBS
Metro City Bankshares, Inc.

Financial Services
PUT
$99,000
3.1K
Q4 2024
Reduced 27.91%
MCB
Metropolitan Bank Holding Corp.

Financial Services
CALL
$1.03 Million
17.7K
Q4 2024
Reduced 3.66%
MCB
Metropolitan Bank Holding Corp.

Financial Services
PUT
$922,000
15.8K
Q4 2024
Reduced 3.66%
Ken Griffin

Ken Griffin

Ken Griffin is the founder and CEO of Citadel Advisors, a successful investment firm that uses technology and data-driven approaches to investing. Griffin is known for his expertise in quantitative investing and his innovative approach to investing. He has generated strong returns for his clients over the long term.
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Summary

  • Portfolio
  • No. of Stocks 17,346
  • Current Value $559 Billion
  • Prior Value $505 Billion
  • Filing
  • Period Q4 2024
  • Filing Date February 14, 2025
  • Form Type 13F-HR
  • Activity in Q4 2024
  • New Purchases 1,277 stocks
  • Additional Purchases 2,500 stocks
  • Sold out of 0 stocks
  • Reduced holdings in 2,108 stocks
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