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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
+6.46%
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
$122B
AUM Growth
+$7.84B
Cap. Flow
-$3.39B
Cap. Flow %
-2.78%
Top 10 Hldgs %
42.57%
Holding
10,535
New
1,474
Increased
3,350
Reduced
3,913
Closed
1,517

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 Technology 0.41%
2 Healthcare 0.21%
3 Consumer Discretionary 0.21%
4 Communication Services 0.2%
5 Financials 0.15%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
DGS icon
8376
WisdomTree Emerging Markets SmallCap Dividend Fund
DGS
$1.7B
$2K ﹤0.01%
60
-3,946
-99% -$183K
DNB
8377
PUT
DELISTED
Dun & Bradstreet
DNB
$2K ﹤0.01%
200
– –
DPRO
8378
Draganfly
DPRO
$156M
$2K ﹤0.01%
78
-196
-72% -$5.04K
DRIO icon
8379
DarioHealth
DRIO
$57M
$2K ﹤0.01%
+33
New +$2.51K
DSGN icon
8380
Design Therapeutics
DSGN
$736M
$2K ﹤0.01%
382
-155
-29% -$949
DYN icon
8381
CALL
Dyne Therapeutics
DYN
$4.04B
$2K ﹤0.01%
200
-500
-71% -$5.9K
EATZ
8382
DELISTED
AdvisorShares Restaurant ETF
EATZ
$2K ﹤0.01%
+132
New +$2.71K
ECVT icon
8383
Ecovyst
ECVT
$1.36B
$2K ﹤0.01%
+200
New +$2.18K
ECVT icon
8384
PUT
Ecovyst
ECVT
$1.36B
$2K ﹤0.01%
+200
New +$2.18K
EGBN icon
8385
PUT
Eagle Bancorp
EGBN
$867M
$2K ﹤0.01%
100
-5,700
-98% -$134K
EHAB
8386
DELISTED
Enhabit
EHAB
$2K ﹤0.01%
238
+102
+75% +$1.27K
ELP
8387
CALL
DELISTED
Companhia Paranaense de Energia (COPEL)
ELP
$2K ﹤0.01%
+375
New +$2.28K
EMX
8388
CALL
DELISTED
EMX Royalty
EMX
$2K ﹤0.01%
1,100
-1,800
-62% -$3.5K
ENIC icon
8389
PUT
Enel Chile
ENIC
$5.96B
$2K ﹤0.01%
+700
New +$2.06K
EOLS icon
8390
PUT
Evolus
EOLS
$394M
$2K ﹤0.01%
300
-5,700
-95% -$49.2K
ERAS icon
8391
CALL
Erasca
ERAS
$6.63B
$2K ﹤0.01%
+800
New +$2.28K
ESCA icon
8392
CALL
Escalade
ESCA
$257M
$2K ﹤0.01%
+200
New +$2.72K
EVAX
8393
Evaxion A/S
EVAX
$24.7M
$2K ﹤0.01%
37
-131
-78% -$9.15K
HYPD
8394
PUT
Hyperion DeFi Inc
HYPD
$38M
$2K ﹤0.01%
+13
New +$3.73K
FCPT icon
8395
PUT
Four Corners Property Trust
FCPT
$2.86B
$2K ﹤0.01%
100
-100
-50% -$2.59K
FENG
8396
CALL
Phoenix New Media
FENG
$16.8M
$2K ﹤0.01%
1,100
+600
+120% +$1.38K
FLJP icon
8397
Franklin FTSE Japan ETF
FLJP
$3.93B
$2K ﹤0.01%
+100
New +$2.65K
FLL icon
8398
Full House Resorts
FLL
$84.5M
$2K ﹤0.01%
+315
New +$2.17K
FOSL icon
8399
Fossil Group
FOSL
$239M
$2K ﹤0.01%
+796
New +$2.19K
FOSL icon
8400
PUT
Fossil Group
FOSL
$239M
$2K ﹤0.01%
+1,100
New +$3.02K
334 335
336
337 338

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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, 3,350 increased, 3,913 reduced and 1,517 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 Technology at 0.41% of assets, down from 0.42% a quarter earlier, followed by Healthcare and Consumer Discretionary.

  • 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 1,517 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.