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 | |
|---|---|---|---|---|---|---|
6101
PUT
Endava
DAVA
$153M
| $49K | ﹤0.01% |
1,700
-23,100
| -93% | -$685K |
|
6102
CALL
DLH Holdings
DLHC
$71M
| $49K | ﹤0.01% |
4,700
+100
| +2% | +$1.13K |
|
6103
CALL
Dorchester Minerals
DMLP
$1.3B
| $49K | ﹤0.01% |
1,600
-8,300
| -84% | -$270K |
|
6104
Evolution Petroleum
EPM
$131M
| $49K | ﹤0.01% |
9,347
+7,684
| +462% | +$43.1K |
|
6105
Edgewise Therapeutics
EWTX
$4.42B
| $49K | ﹤0.01% |
2,734
-291
| -10% | -$5.08K |
|
6106
Eagle Materials
EXP
$6.3B
| $49K | ﹤0.01% |
226
-1,553
| -87% | -$380K |
|
6107
Invesco CurrencyShares Australian Dollar Trust
FXA
$97.5M
| $49K | ﹤0.01% |
745
-8,217
| -92% | -$536K |
|
6108
Hanmi Financial
HAFC
$940M
| $49K | ﹤0.01% |
2,972
+172
| +6% | +$2.68K |
|
6109
The Joint Corp
JYNT
$119M
| $49K | ﹤0.01% |
+3,515
| New | +$50.1K |
|
6110
CALL
LiveOne
LVO
$61.6M
| $49K | ﹤0.01% |
3,180
+3,010
| +1,771% | +$53.2K |
|
6111
MGP Ingredients
MGPI
$380M
| $49K | ﹤0.01% |
670
+510
| +319% | +$39.8K |
|
|
MRCC
6112
DELISTED
Monroe Capital Corp
MRCC
| $49K | ﹤0.01% |
6,459
+1,712
| +36% | +$12.6K |
|
6113
Nabors Industries
NBR
$1.22B
| $49K | ﹤0.01% |
698
-4,287
| -86% | -$320K |
|
|
NREF
6114
PUT
NexPoint Real Estate Finance
NREF
$318M
| $49K | ﹤0.01% |
3,600
+3,300
| +1,100% | +$44.6K |
|
6115
CALL
OmniAb
OABI
$288M
| $49K | ﹤0.01% |
13,200
+9,300
| +238% | +$42.4K |
|
6116
PUT
Organogenesis Holdings
ORGO
$315M
| $49K | ﹤0.01% |
17,500
+3,800
| +28% | +$10.2K |
|
6117
PMV Pharmaceuticals
PMVP
$60.3M
| $49K | ﹤0.01% |
30,716
+20,476
| +200% | +$36.9K |
|
6118
PUT
Porch Group
PRCH
$1.63B
| $49K | ﹤0.01% |
32,800
-1,300
| -4% | -$3.62K |
|
6119
Direxion Daily Retail Bull 3X ETF
RETL
$31.6M
| $49K | ﹤0.01% |
5,342
+4,888
| +1,077% | +$45.3K |
|
6120
PUT
SiTime
SITM
$15.8B
| $49K | ﹤0.01% |
400
-1,100
| -73% | -$117K |
|
6121
Tradr TSLA Bear Daily ETF
TSLQ
$145M
| $49K | ﹤0.01% |
86
-17
| -17% | -$11.4K |
|
6122
CALL
Sixth Street Specialty
TSLX
$1.64B
| $49K | ﹤0.01% |
2,300
-5,200
| -69% | -$111K |
|
6123
ProShares Ultra Gold
UGL
$670M
| $49K | ﹤0.01% |
+2,568
| New | +$50.7K |
|
6124
CALL
Veracyte
VCYT
$4.77B
| $49K | ﹤0.01% |
2,300
+1,400
| +156% | +$29.4K |
|
|
INST
6125
CALL
DELISTED
Instructure Holdings, Inc.
INST
| $49K | ﹤0.01% |
2,100
-800
| -28% | -$17K |
|
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.