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 |
NVIDIA
NVDA
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2751
CALL
Viasat
VSAT
$9.79B
| $1.18M | ﹤0.01% |
93,000
+32,300
| +53% | +$515K |
|
2752
PUT
Funko
FNKO
$323M
| $1.18M | ﹤0.01% |
120,800
+100,400
| +492% | +$779K |
|
|
GOOS
2753
PUT
Canada Goose Holdings
GOOS
$868M
| $1.18M | ﹤0.01% |
91,200
-43,600
| -32% | -$542K |
|
2754
AXIS Capital
AXS
$8.59B
| $1.18M | ﹤0.01% |
+16,684
| New | +$1.13M |
|
|
LOGC
2755
CALL
DELISTED
ContextLogic
LOGC
| $1.18M | ﹤0.01% |
206,400
-400
| -0.2% | -$2.2K |
|
2756
Primoris Services
PRIM
$4.69B
| $1.18M | ﹤0.01% |
+23,596
| New | +$1.17M |
|
2757
PUT
Lear
LEA
$7.19B
| $1.18M | ﹤0.01% |
10,300
-1,400
| -12% | -$179K |
|
2758
CALL
Philips
PHG
$25.4B
| $1.18M | ﹤0.01% |
50,483
+21,193
| +72% | +$476K |
|
2759
MarineMax
HZO
$800M
| $1.18M | ﹤0.01% |
+36,327
| New | +$1.06M |
|
2760
CALL
MannKind Corp
MNKD
$1.28B
| $1.18M | ﹤0.01% |
225,100
-173,600
| -44% | -$788K |
|
2761
CALL
Vestis
VSTS
$2.06B
| $1.18M | ﹤0.01% |
96,100
+90,600
| +1,647% | +$1.31M |
|
2762
PUT
Yeti Holdings
YETI
$3.82B
| $1.18M | ﹤0.01% |
30,800
-52,700
| -63% | -$2.05M |
|
2763
PUT
Idexx Laboratories
IDXX
$42.9B
| $1.17M | ﹤0.01% |
2,400
-11,200
| -82% | -$5.62M |
|
2764
CALL
LegalZoom.com
LZ
$1.23B
| $1.17M | ﹤0.01% |
139,100
-121,500
| -47% | -$1.25M |
|
2765
Ford
F
$57.3B
| $1.16M | ﹤0.01% |
92,615
-872,007
| -90% | -$10.8M |
|
2766
CALL
Camping World
CWH
$363M
| $1.16M | ﹤0.01% |
65,000
+4,800
| +8% | +$101K |
|
2767
GitLab
GTLB
$5.28B
| $1.16M | ﹤0.01% |
23,344
-25,317
| -52% | -$1.32M |
|
2768
CALL
Waters Corp
WAT
$36.8B
| $1.16M | ﹤0.01% |
4,000
-2,100
| -34% | -$670K |
|
2769
ACM Research
ACMR
$5.83B
| $1.16M | ﹤0.01% |
+50,265
| New | +$1.27M |
|
2770
PUT
McEwen Inc
MUX
$1.03B
| $1.16M | ﹤0.01% |
126,300
-54,800
| -30% | -$602K |
|
2771
NetEase
NTES
$76.5B
| $1.16M | ﹤0.01% |
12,127
+8,658
| +250% | +$824K |
|
2772
CALL
Genesis Energy
GEL
$1.84B
| $1.16M | ﹤0.01% |
80,900
+68,300
| +542% | +$864K |
|
2773
PUT
LCI Industries
LCII
$2.51B
| $1.16M | ﹤0.01% |
11,200
-400
| -3% | -$43.2K |
|
2774
Enbridge
ENB
$124B
| $1.16M | ﹤0.01% |
32,481
+7,216
| +29% | +$258K |
|
2775
CALL
Sun Communities
SUI
$15B
| $1.16M | ﹤0.01% |
9,600
+9,100
| +1,820% | +$1.08M |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.