We are live on ! Find out more
Simplex Trading

Simplex Trading Portfolio holdings

AUM $149B
1-Year Est. Return 62.07%
 

Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.

This Fund
S&P 500
This Quarter Est. Return
-17.92%
1 Year Est. Return
+62.07%
3 Year Est. Return
+116.86%
5 Year Est. Return
+116.02%
10 Year Est. Return
+774.44%
AUM
$94.1B
AUM Growth
-$15.3B
Cap. Flow
+$11.3B
Cap. Flow %
12.02%
Top 10 Hldgs %
40.12%
Holding
11,810
New
1,405
Increased
4,027
Reduced
4,289
Closed
1,792

Sector Composition

Rank Sector Weight
1 Technology 0.84%
2 Communication Services 0.32%
3 Consumer Discretionary 0.32%
4 Financials 0.28%
5 Healthcare 0.2%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake
Capital Flow
LNC icon
1851
CALL
Lincoln National
LNC
$7.91B
$2.02M ﹤0.01%
43,300
-10,400
-19% -$593K
STR
1852
CALL
DELISTED
Sitio Royalties
STR
$2.02M ﹤0.01%
87,400
+66,050
+309% +$1.83M
TXNM
1853
CALL
TXNM Energy Inc
TXNM
$6.47B
$2.02M ﹤0.01%
42,400
+42,200
+21,100% +$1.98M
APLS
1854
CALL
DELISTED
Apellis Pharmaceuticals
APLS
$2.02M ﹤0.01%
44,700
+700
+2% +$31.9K
PENN icon
1855
PENN Entertainment
PENN
$2.74B
$2.02M ﹤0.01%
66,442
-75,216
-53% -$2.54M
CP icon
1856
CALL
Canadian Pacific Kansas City
CP
$82B
$2.02M ﹤0.01%
28,900
-6,800
-19% -$492K
MCO icon
1857
Moody's
MCO
$81.7B
$2.02M ﹤0.01%
7,420
+3,816
+106% +$1.14M
TREX icon
1858
PUT
Trex
TREX
$4.51B
$2.02M ﹤0.01%
37,100
-4,300
-10% -$259K
CNX icon
1859
CALL
CNX Resources
CNX
$4.85B
$2.02M ﹤0.01%
122,500
+12,000
+11% +$246K
ROK icon
1860
Rockwell Automation
ROK
$51.4B
$2.01M ﹤0.01%
+10,105
New +$2.28M
NUGT icon
1861
Direxion Daily Gold Miners Index Bull 2X ETF
NUGT
$863M
$2.01M ﹤0.01%
58,587
+44,983
+331% +$2.44M
NYT icon
1862
CALL
New York Times
NYT
$11.6B
$2.01M ﹤0.01%
72,100
+62,400
+643% +$2.25M
ARNC
1863
PUT
DELISTED
Arconic Corporation
ARNC
$2.01M ﹤0.01%
71,600
+5,400
+8% +$146K
OGN icon
1864
CALL
Organon & Co
OGN
$3.55B
$2M ﹤0.01%
59,400
+22,100
+59% +$774K
BZ icon
1865
PUT
Kanzhun
BZ
$6.89B
$2M ﹤0.01%
76,200
+33,500
+78% +$744K
KZR
1866
CALL
DELISTED
Kezar Life Sciences
KZR
$2M ﹤0.01%
24,220
+9,150
+61% +$807K
SAFE
1867
CALL
Safehold
SAFE
$1.19B
$2M ﹤0.01%
29,994
+7,806
+35% +$657K
CAG icon
1868
PUT
Conagra Brands
CAG
$7.07B
$2M ﹤0.01%
58,300
+11,000
+23% +$375K
AVYA
1869
PUT
DELISTED
Avaya Holdings Corp. Common Stock
AVYA
$2M ﹤0.01%
891,200
+883,100
+10,902% +$6.31M
MQ icon
1870
CALL
Marqeta
MQ
$1.8B
$2M ﹤0.01%
61,525
-15,300
-20% -$602K
SYNA icon
1871
PUT
Synaptics
SYNA
$4.41B
$2M ﹤0.01%
16,900
+4,200
+33% +$616K
LESL icon
1872
CALL
Leslie's
LESL
$11.6M
$1.99M ﹤0.01%
6,565
+5,805
+764% +$2.17M
FE icon
1873
CALL
FirstEnergy
FE
$28.9B
$1.99M ﹤0.01%
51,900
-81,500
-61% -$3.48M
CVNA icon
1874
Carvana
CVNA
$43.3B
$1.99M ﹤0.01%
+440,540
New +$4.64M
PPLI
1875
PUT
People Inc
PPLI
$3.1B
$1.98M ﹤0.01%
31,816
+31,450
+8,593% +$2.22M

Similar funds

Simplex Trading's Q2 2022 Portfolio in Review

As of Q2 2022, Simplex Trading held 11,810 positions worth $94.1B, down 14% from $109B the previous quarter. Its ten largest holdings account for 40% of the portfolio.

Simplex Trading deployed $11.3B of net new capital in Q2 2022, opening 1,405 new positions and adding to 4,027 existing holdings. Its largest new stake was Alphabet (Google) Class C: 543,540 shares worth $59.4M.

By sector, the portfolio is most concentrated in Technology at 0.84% of assets, up from 0.67% a quarter earlier, followed by Communication Services and Consumer Discretionary.

On the sell side, the largest reduction was United Airlines, an estimated $22.7M trimmed.

  • Simplex Trading's largest Q2 2022 buy was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
  • Simplex Trading added most to Apple in Q2 2022, an estimated $286M increase.
  • Simplex Trading's biggest Q2 2022 reduction was United Airlines, cutting an estimated $22.7M.
  • Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2022, selling an estimated $51.5M.
  • Simplex Trading's ten largest holdings make up 40% of its $94.1B portfolio in Q2 2022.
  • Simplex Trading opened 1,405 new positions and closed 1,792 in Q2 2022.
  • Simplex Trading's portfolio value fell 14% quarter-over-quarter to $94.1B.

Based on Simplex Trading's 13F filing for Q2 2022, filed 3 Aug 2022.