Simplex Trading Portfolio holdings
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.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Walmart Inc
WMT
|
+$43.6M |
| 2 |
Apple
AAPL
|
+$40.9M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$37.7M |
| 4 |
Citigroup
C
|
+$34.2M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$32.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$189M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$123M |
| 3 |
NVIDIA
NVDA
|
+$115M |
| 4 |
Tesla
TSLA
|
+$52M |
| 5 |
Meta Platforms (Facebook)
META
|
+$49M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.42% |
| 2 | Consumer Discretionary | 0.2% |
| 3 | Healthcare | 0.17% |
| 4 | Industrials | 0.15% |
| 5 | Communication Services | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
CGC
2501
PUT
Canopy Growth
CGC
$375M
| $1.12M | ﹤0.01% |
63,790
+32,320
| +103% | +$767K |
|
|
BRSL
2502
CALL
Brightstar Lottery PLC
BRSL
$1.91B
| $1.11M | ﹤0.01% |
41,600
-90,000
| -68% | -$2.3M |
|
2503
Byrna Technologies
BYRN
$80.3M
| $1.11M | ﹤0.01% |
146,652
+87,935
| +150% | +$781K |
|
2504
PUT
Verisk Analytics
VRSK
$26.4B
| $1.11M | ﹤0.01% |
5,800
+4,700
| +427% | +$851K |
|
2505
Ericsson
ERIC
$30.7B
| $1.11M | ﹤0.01% |
189,844
-29,574
| -13% | -$169K |
|
2506
PUT
VICI Properties
VICI
$29.4B
| $1.11M | ﹤0.01% |
34,000
-151,700
| -82% | -$5.02M |
|
|
AZUL
2507
PUT
DELISTED
Azul
AZUL
| $1.11M | ﹤0.01% |
155,100
-73,400
| -32% | -$460K |
|
2508
PUT
Nexstar Media Group
NXST
$5.6B
| $1.1M | ﹤0.01% |
+6,400
| New | +$1.18M |
|
2509
CALL
California Resources
CRC
$4.75B
| $1.1M | ﹤0.01% |
28,700
+2,100
| +8% | +$86.9K |
|
2510
CALL
Genesis Energy
GEL
$1.84B
| $1.1M | ﹤0.01% |
98,100
+83,800
| +586% | +$943K |
|
2511
CALL
Booz Allen Hamilton
BAH
$8.7B
| $1.1M | ﹤0.01% |
11,900
+7,500
| +170% | +$711K |
|
2512
InMode
INMD
$872M
| $1.1M | ﹤0.01% |
+34,421
| New | +$1.18M |
|
2513
CALL
Editas Medicine
EDIT
$399M
| $1.1M | ﹤0.01% |
151,600
-31,100
| -17% | -$277K |
|
2514
PUT
Plains All American Pipeline
PAA
$17.4B
| $1.1M | ﹤0.01% |
88,100
-83,400
| -49% | -$1.04M |
|
2515
CALL
Runway Growth Finance
RWAY
$227M
| $1.1M | ﹤0.01% |
90,400
+88,900
| +5,927% | +$1.11M |
|
2516
PUT
CubeSmart
CUBE
$9.53B
| $1.09M | ﹤0.01% |
23,700
+22,900
| +2,863% | +$1.03M |
|
2517
GitLab
GTLB
$5.28B
| $1.09M | ﹤0.01% |
+31,915
| New | +$1.4M |
|
2518
PUT
Aegon
AEG
$13.5B
| $1.09M | ﹤0.01% |
254,000
-22,700
| -8% | -$115K |
|
2519
PUT
Brookfield Asset Management
BAM
$74B
| $1.09M | ﹤0.01% |
+33,400
| New | +$1.08M |
|
2520
Kroger
KR
$34.8B
| $1.09M | ﹤0.01% |
+22,125
| New | +$1.01M |
|
2521
PUT
MPLX
MPLX
$59.5B
| $1.09M | ﹤0.01% |
31,700
-30,800
| -49% | -$1.06M |
|
|
SNV
2522
DELISTED
Synovus
SNV
| $1.09M | ﹤0.01% |
35,432
+17,758
| +100% | +$676K |
|
2523
PUT
Fox Class B
FOX
$20.7B
| $1.09M | ﹤0.01% |
32,100
+19,900
| +163% | +$624K |
|
2524
Innoviz Technologies
INVZ
$135M
| $1.09M | ﹤0.01% |
311,251
-116,458
| -27% | -$516K |
|
2525
CALL
Tronox
TROX
$995M
| $1.08M | ﹤0.01% |
75,500
+11,200
| +17% | +$173K |
|
Similar funds
Simplex Trading's Q1 2023 Portfolio in Review
As of Q1 2023, Simplex Trading held 10,803 positions worth $114B, up 24% from $91.9B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading deployed $10.1B of net new capital in Q1 2023, opening 1,536 new positions and adding to 3,665 existing holdings. Its largest new stake was Walmart Inc: 918,957 shares worth $45.2M.
By sector, the portfolio is most concentrated in Technology at 0.42% of assets, up from 0.35% a quarter earlier, followed by Consumer Discretionary and Healthcare.
On the sell side, the largest reduction was Meta Platforms (Facebook), an estimated $49M trimmed.
- Simplex Trading's largest Q1 2023 buy was Walmart Inc: 918,957 shares worth $45.2M.
- Simplex Trading added most to Apple in Q1 2023, an estimated $40.9M increase.
- Simplex Trading's biggest Q1 2023 reduction was Meta Platforms (Facebook), cutting an estimated $49M.
- Simplex Trading fully exited Amazon in Q1 2023, selling an estimated $189M.
- Simplex Trading's ten largest holdings make up 38% of its $114B portfolio in Q1 2023.
- Simplex Trading opened 1,536 new positions and closed 1,729 in Q1 2023.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $114B.
Based on Simplex Trading's 13F filing for Q1 2023, filed 27 Apr 2023.