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 |
Pfizer
PFE
|
+$89.5M |
| 2 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$85.5M |
| 3 |
Boeing
BA
|
+$71M |
| 4 |
Intel
INTC
|
+$60.7M |
| 5 |
Meta Platforms (Facebook)
META
|
+$48.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$104M |
| 3 |
Alibaba
BABA
|
+$82.8M |
| 4 |
Walt Disney
DIS
|
+$68.5M |
| 5 |
Citigroup
C
|
+$59.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.38% |
| 2 | Healthcare | 0.27% |
| 3 | Consumer Discretionary | 0.25% |
| 4 | Industrials | 0.17% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
6026
PUT
RXO
RXO
$3.34B
| $65K | ﹤0.01% |
3,000
-1,900
| -39% | -$40.7K |
|
6027
PUT
TTEC Holdings
TTEC
$121M
| $65K | ﹤0.01% |
6,300
+6,100
| +3,050% | +$102K |
|
6028
Vanguard S&P 500 Growth ETF
VOOG
$25.9B
| $65K | ﹤0.01% |
+1,290
| New | +$62.3K |
|
6029
CALL
Wabash National
WNC
$512M
| $65K | ﹤0.01% |
2,200
-900
| -29% | -$23.7K |
|
6030
CALL
Chemed
CHE
$7.07B
| $64K | ﹤0.01% |
+100
| New | +$60.8K |
|
6031
PUT
Americold
COLD
$4.02B
| $64K | ﹤0.01% |
2,600
-1,300
| -33% | -$35.5K |
|
6032
Hamilton Lane
HLNE
$4.91B
| $64K | ﹤0.01% |
573
-730
| -56% | -$82.4K |
|
6033
CALL
Kennametal
KMT
$2.59B
| $64K | ﹤0.01% |
2,600
+2,300
| +767% | +$56.6K |
|
6034
PUT
Lindblad Expeditions
LIND
$1.94B
| $64K | ﹤0.01% |
6,900
-400
| -5% | -$3.68K |
|
6035
CALL
Northeast Community Bancorp
NECB
$368M
| $64K | ﹤0.01% |
4,100
-5,100
| -55% | -$82.7K |
|
6036
PUT
ONE Gas
OGS
$4.87B
| $64K | ﹤0.01% |
+1,000
| New | +$61.4K |
|
6037
CALL
Old National Bancorp
ONB
$10.2B
| $64K | ﹤0.01% |
3,700
+500
| +16% | +$8.27K |
|
6038
PUT
Pampa Energía
PAM
$4.75B
| $64K | ﹤0.01% |
1,500
-2,500
| -63% | -$111K |
|
|
PBPB
6039
PUT
DELISTED
Potbelly
PBPB
| $64K | ﹤0.01% |
5,300
+2,600
| +96% | +$32.5K |
|
6040
CALL
Sun Communities
SUI
$15.2B
| $64K | ﹤0.01% |
500
+200
| +67% | +$26K |
|
6041
Direxion Daily Consumer Discretionary Bull 3X ETF
WANT
$16.2M
| $64K | ﹤0.01% |
1,815
+452
| +33% | +$14.9K |
|
6042
Alamos Gold
AGI
$11.6B
| $63K | ﹤0.01% |
+4,280
| New | +$54.1K |
|
|
ARIS
6043
DELISTED
Aris Water Solutions
ARIS
| $63K | ﹤0.01% |
4,509
+2,767
| +159% | +$28.1K |
|
6044
CALL
Amdocs
DOX
$5.92B
| $63K | ﹤0.01% |
700
-1,800
| -72% | -$164K |
|
6045
CALL
Evolution Petroleum
EPM
$132M
| $63K | ﹤0.01% |
10,300
+10,100
| +5,050% | +$58K |
|
6046
Great Southern Bancorp
GSBC
$874M
| $63K | ﹤0.01% |
1,154
+947
| +457% | +$50.4K |
|
6047
PUT
Immunic
IMUX
$190M
| $63K | ﹤0.01% |
4,790
+2,340
| +96% | +$30.4K |
|
6048
Newmark Group
NMRK
$2.66B
| $63K | ﹤0.01% |
5,759
-2,766
| -32% | -$28.9K |
|
6049
CALL
NN Inc
NNBR
$255M
| $63K | ﹤0.01% |
13,300
+1,400
| +12% | +$6.43K |
|
6050
CALL
Portland General Electric
POR
$5.8B
| $63K | ﹤0.01% |
1,500
+100
| +7% | +$4.12K |
|
Similar funds
Simplex Trading's Q1 2024 Portfolio in Review
As of Q1 2024, Simplex Trading held 10,366 positions worth $173B, up 11% from $156B the previous quarter. Its ten largest holdings account for 47% of the portfolio.
Simplex Trading's Q1 2024 filing shows 1,549 new, 3,675 increased, 3,484 reduced and 1,506 closed positions. Its largest new stake was Boeing: 345,653 shares worth $66.7M. The largest sale was NVIDIA, an estimated $117M.
By sector, the portfolio is most concentrated in Technology at 0.38% of assets, up from 0.33% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2024 buy was Boeing: 345,653 shares worth $66.7M.
- Simplex Trading added most to Pfizer in Q1 2024, an estimated $89.5M increase.
- Simplex Trading's biggest Q1 2024 reduction was NVIDIA, cutting an estimated $117M.
- Simplex Trading fully exited Citigroup in Q1 2024, selling an estimated $59.8M.
- Simplex Trading's ten largest holdings make up 47% of its $173B portfolio in Q1 2024.
- Simplex Trading opened 1,549 new positions and closed 1,506 in Q1 2024.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $173B.
Based on Simplex Trading's 13F filing for Q1 2024, filed 25 Apr 2024.