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Simplex Trading

Simplex Trading Portfolio holdings

AUM $171B
1-Year Est. Return 85%
 

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
+6.46%
1 Year Est. Return
+85%
3 Year Est. Return
+183.25%
5 Year Est. Return
+145.21%
10 Year Est. Return
+1,056.84%
AUM
$122B
AUM Growth
+$7.84B
Cap. Flow
+$86.7M
Cap. Flow %
0.07%
Top 10 Hldgs %
42.57%
Holding
10,535
New
1,474
Increased
3,349
Reduced
3,911
Closed
1,518

Top Buys

Rank Stock Value
1
MSFT icon
Microsoft
MSFT
+$53.9M
2
TLT icon
iShares 20+ Year Treasury Bond ETF
TLT
+$52.9M
3
NVDA icon
NVIDIA
NVDA
+$47.1M
4
PYPL icon
PayPal
PYPL
+$41.7M
5
GOOG icon
Alphabet (Google) Class C
GOOG
+$28.4M

Top Sells

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$51.4M
2
WMT icon
Walmart Inc
WMT
+$46.4M
3
OIH icon
VanEck Oil Services ETF
OIH
+$34.2M
4
ADBE icon
Adobe
ADBE
+$33.5M
5
SBUX icon
Starbucks
SBUX
+$26.8M

Sector Composition

Rank Sector Weight
1 Miscellaneous 98.43%
2 Technology 0.41%
3 Healthcare 0.21%
4 Consumer Discretionary 0.21%
5 Communication Services 0.21%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
COLO
9326
Global X MSCI Colombia ETF
COLO
$226M
– –
-357
Closed -$6K
GYRE icon
9327
Gyre Therapeutics
GYRE
$727M
– –
-2,962
Closed -$10.6K
H icon
9328
Hyatt Hotels
H
$15.6B
– –
-12,318
Closed -$1.39M
HAIN icon
9329
Hain Celestial
HAIN
$67.5M
– –
-1,497
Closed -$22K
HBB icon
9330
CALL
Hamilton Beach Brands
HBB
$417M
– –
-300
Closed -$3K
HCAT icon
9331
Health Catalyst
HCAT
$127M
– –
-582
Closed -$6.93K
HCI icon
9332
HCI Group
HCI
$2.33B
– –
-93
Closed -$4K
HCM icon
9333
HUTCHMED
HCM
$2.45B
$0 ﹤0.01%
+20
New +$273
HDGE icon
9334
AdvisorShares Ranger Equity Bear ETF
HDGE
$51.5M
– –
-9,232
Closed -$234K
HDSN
9335
Hudson Technologies
HDSN
$225M
– –
-4,966
Closed -$43.2K
HEDJ icon
9336
WisdomTree Europe Hedged Equity Fund
HEDJ
$1.81B
– –
-1,012
Closed -$41K
HEPA
9337
CALL
DELISTED
Hepion Pharmaceuticals
HEPA
– –
-105
Closed -$81K
HES
9338
DELISTED
Hess
HES
– –
-12,547
Closed -$1.72M
HERO icon
9339
Global X Video Games & Esports ETF
HERO
$63.7M
– –
-6
Closed –
HFFG icon
9340
HF Foods Group
HFFG
$98.4M
– –
-5,124
Closed -$20.1K
HHH icon
9341
Howard Hughes
HHH
$3.83B
– –
-998
Closed -$72.3K
HIW icon
9342
Highwoods Properties
HIW
$3.44B
– –
-3,380
Closed -$74.8K
HLIO icon
9343
CALL
Helios Technologies
HLIO
$2.36B
– –
-1,000
Closed -$65K
HLIO icon
9344
Helios Technologies
HLIO
$2.36B
– –
-68
Closed -$4K
HLIO icon
9345
PUT
Helios Technologies
HLIO
$2.36B
– –
-100
Closed -$6K
HLLY icon
9346
CALL
Holley
HLLY
$370M
– –
-2,100
Closed -$5K
HLI icon
9347
CALL
Houlihan Lokey
HLI
$9.58B
– –
-5,500
Closed -$481K
HOS
9348
PUT
Hornbeck Offshore Services, Inc.
HOS
$1.36B
– –
-400
Closed -$3K
HNDL icon
9349
Strategy Shares Nasdaq 7HANDL Index ETF
HNDL
$636M
– –
-95
Closed -$1K
HNI icon
9350
HNI Corp
HNI
$3.58B
– –
-350
Closed -$9.3K
372 373
374
375 376

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Simplex Trading's Q2 2023 Portfolio in Review

As of Q2 2023, Simplex Trading held 10,535 positions worth $122B, up 6.9% from $114B the previous quarter. Its ten largest holdings account for 43% of the portfolio.

Simplex Trading's Q2 2023 filing shows 1,474 new, 3,349 increased, 3,911 reduced and 1,518 closed positions. Its largest new stake was Microsoft: 171,935 shares worth $58.5M. The largest sale was Apple, an estimated $51.4M.

By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, down from 99% a quarter earlier, followed by Technology and Healthcare.

  • Simplex Trading's largest Q2 2023 buy was Microsoft: 171,935 shares worth $58.5M.
  • Simplex Trading added most to iShares 20+ Year Treasury Bond ETF in Q2 2023, an estimated $52.9M increase.
  • Simplex Trading's biggest Q2 2023 reduction was Adobe, cutting an estimated $33.5M.
  • Simplex Trading fully exited Apple in Q2 2023, selling an estimated $51.4M.
  • Simplex Trading's ten largest holdings make up 43% of its $122B portfolio in Q2 2023.
  • Simplex Trading opened 1,474 new positions and closed 1,518 in Q2 2023.
  • Simplex Trading's portfolio value rose 6.9% quarter-over-quarter to $122B.

Based on Simplex Trading's 13F filing for Q2 2023, filed 4 Aug 2023.