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 | |
|---|---|---|---|---|---|---|
5876
UNIFI
UFI
$119M
| $61K | ﹤0.01% |
10,457
+8,121
| +348% | +$48.3K |
|
5877
Verisk Analytics
VRSK
$25.4B
| $61K | ﹤0.01% |
+229
| New | +$56K |
|
5878
PUT
Voyager Therapeutics
VYGR
$183M
| $61K | ﹤0.01% |
7,800
+500
| +7% | +$4.19K |
|
5879
PUT
World Kinect Corp
WKC
$2.04B
| $61K | ﹤0.01% |
2,400
-100
| -4% | -$2.53K |
|
5880
YieldMax Universe Fund of Option Income ETFs
YMAX
$389M
| $61K | ﹤0.01% |
+3,142
| New | +$63.9K |
|
|
TEN
5881
PUT
Tsakos Energy Navigation Ltd
TEN
$1.21B
| $61K | ﹤0.01% |
57,200
-48,200
| -46% | -$1.35M |
|
|
INVX
5882
CALL
Innovex International
INVX
$1.96B
| $61K | ﹤0.01% |
3,300
-6,700
| -67% | -$130K |
|
|
RCM
5883
CALL
DELISTED
R1 RCM Inc. Common Stock
RCM
| $61K | ﹤0.01% |
4,900
-12,800
| -72% | -$159K |
|
|
TELL
5884
DELISTED
Tellurian Inc.
TELL
| $61K | ﹤0.01% |
88,910
-25,758
| -22% | -$14.3K |
|
|
WKME
5885
PUT
DELISTED
WalkMe Ltd. Ordinary Shares
WKME
| $61K | ﹤0.01% |
4,400
+500
| +13% | +$4.89K |
|
5886
United States Brent Oil Fund
BNO
$781M
| $60K | ﹤0.01% |
+1,867
| New | +$58.9K |
|
|
BRFS
5887
CALL
DELISTED
BRF SA
BRFS
| $60K | ﹤0.01% |
14,900
-17,900
| -55% | -$62.9K |
|
5888
PUT
CareDx
CDNA
$2.26B
| $60K | ﹤0.01% |
3,900
-23,600
| -86% | -$285K |
|
5889
CALL
GoPro
GPRO
$130M
| $60K | ﹤0.01% |
42,500
+8,800
| +26% | +$14.7K |
|
5890
CALL
O-I Glass
OI
$1.1B
| $60K | ﹤0.01% |
5,400
-14,900
| -73% | -$201K |
|
5891
Prudential
PUK
$37.6B
| $60K | ﹤0.01% |
+3,299
| New | +$62.2K |
|
5892
PUT
Avita Medical
RCEL
$135M
| $60K | ﹤0.01% |
+7,700
| New | +$73.2K |
|
5893
The RMR Group
RMR
$325M
| $60K | ﹤0.01% |
2,698
+1,744
| +183% | +$40.8K |
|
|
SUPV
5894
PUT
Grupo Supervielle
SUPV
$828M
| $60K | ﹤0.01% |
8,900
+3,900
| +78% | +$25.4K |
|
5895
CALL
TransAlta
TAC
$3.95B
| $60K | ﹤0.01% |
8,600
+1,200
| +16% | +$8.22K |
|
5896
PUT
10x Genomics
TXG
$6B
| $60K | ﹤0.01% |
3,100
-5,800
| -65% | -$152K |
|
5897
PUT
United States Gasoline Fund
UGA
$142M
| $60K | ﹤0.01% |
900
+500
| +125% | +$34.1K |
|
5898
Woodside Energy
WDS
$44.6B
| $60K | ﹤0.01% |
+3,220
| New | +$59.9K |
|
5899
Wave Life Sciences
WVE
$1.09B
| $60K | ﹤0.01% |
12,211
+190
| +2% | +$1.08K |
|
|
LGF.B
5900
DELISTED
Lions Gate Entertainment Corp. Class B Non-Voting Shares
LGF.B
| $60K | ﹤0.01% |
7,068
+6,003
| +564% | +$53.8K |
|
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.