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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
FBK icon
9226
PUT
FB Financial Corp
FBK
$2.95B
– –
-500
Closed -$15K
FBP icon
9227
CALL
First Bancorp
FBP
$4.39B
– –
-3,600
Closed -$41K
FBP icon
9228
First Bancorp
FBP
$4.39B
– –
-340
Closed -$3.96K
FBP icon
9229
PUT
First Bancorp
FBP
$4.39B
– –
-700
Closed -$7K
FC icon
9230
Franklin Covey
FC
$235M
$0 ﹤0.01%
21
-34
-62% -$1.26K
FC icon
9231
PUT
Franklin Covey
FC
$235M
– –
-42,100
Closed -$1.62M
FCBC icon
9232
First Community Bankshares
FCBC
$911M
– –
-371
Closed -$9K
FCBC icon
9233
PUT
First Community Bankshares
FCBC
$911M
– –
-500
Closed -$12K
FCFS icon
9234
CALL
FirstCash
FCFS
$8.65B
– –
-800
Closed -$76K
FCFS icon
9235
FirstCash
FCFS
$8.65B
– –
-300
Closed -$28K
FCN icon
9236
PUT
FTI Consulting
FCN
$4.84B
– –
-11,300
Closed -$2.23M
FCNCA icon
9237
First Citizens BancShares
FCNCA
$24.7B
– –
-49
Closed -$56.7K
FCOM icon
9238
Fidelity MSCI Communication Services Index ETF
FCOM
$1.74B
– –
-61
Closed -$2K
FCUV icon
9239
CALL
Focus Universal
FCUV
$1.59M
– –
-9
Closed -$9K
FDN icon
9240
First Trust Dow Jones Internet Index Fund ETF
FDN
$4.85B
– –
-859
Closed -$127K
DMC
9241
CALL
Del Monte Corp
DMC
$1.35B
– –
-4,300
Closed -$129K
FDVV icon
9242
Fidelity High Dividend ETF
FDVV
$10B
– –
-23
Closed –
FDX icon
9243
FedEx
FDX
$74.7B
– –
-62,644
Closed -$14.3M
FE icon
9244
FirstEnergy
FE
$28.8B
– –
-25,301
Closed -$993K
FENG
9245
Phoenix New Media
FENG
$16.8M
– –
-1,398
Closed -$3.22K
FFIN icon
9246
CALL
First Financial Bankshares
FFIN
$5B
– –
-5,000
Closed -$159K
FFTY icon
9247
CALL
CapForce IBD 50 ETF
FFTY
$80.2M
– –
-1,400
Closed -$33K
KYNB
9248
Kyntra Bio
KYNB
$28.6M
– –
-1,304
Closed -$539K
FINX icon
9249
Global X FinTech ETF
FINX
$168M
– –
-578
Closed -$12K
FIS icon
9250
Fidelity National Information Services
FIS
$21.5B
– –
-159,516
Closed -$8.78M
368 369
370
371 372

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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.