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 | |
|---|---|---|---|---|---|---|
|
TERN
4776
CALL
DELISTED
Terns Pharmaceuticals
TERN
| $177K | ﹤0.01% |
26,100
+12,300
| +89% | +$74.5K |
|
|
MORF
4777
PUT
DELISTED
Morphic Holding, Inc. Common Stock
MORF
| $177K | ﹤0.01% |
5,200
-1,500
| -22% | -$44.4K |
|
4778
CALL
Designer Brands
DBI
$315M
| $176K | ﹤0.01% |
25,900
-33,800
| -57% | -$299K |
|
4779
CALL
Healthpeak Properties
DOC
$15.5B
| $176K | ﹤0.01% |
9,000
-15,600
| -63% | -$298K |
|
4780
Grocery Outlet
GO
$904M
| $176K | ﹤0.01% |
+7,983
| New | +$189K |
|
4781
PUT
Main Street Capital
MAIN
$5.05B
| $176K | ﹤0.01% |
3,500
+3,100
| +775% | +$151K |
|
4782
CALL
MYR Group
MYRG
$5.01B
| $176K | ﹤0.01% |
1,300
-100
| -7% | -$15.6K |
|
4783
NovaGold Resources
NG
$2.54B
| $176K | ﹤0.01% |
50,900
-44,541
| -47% | -$148K |
|
4784
CALL
Cimpress
CMPR
$2.37B
| $175K | ﹤0.01% |
2,000
-2,000
| -50% | -$174K |
|
4785
CALL
Compass Diversified
CODI
$752M
| $175K | ﹤0.01% |
8,000
+5,700
| +248% | +$128K |
|
4786
Cemex
CX
$16.9B
| $175K | ﹤0.01% |
+27,428
| New | +$210K |
|
4787
CALL
Heritage Insurance Holdings
HRTG
$903M
| $175K | ﹤0.01% |
24,800
+11,900
| +92% | +$105K |
|
4788
PUT
Clearwater Paper
CLW
$349M
| $174K | ﹤0.01% |
3,600
-21,100
| -85% | -$992K |
|
4789
CALL
Magnolia Oil & Gas
MGY
$5.93B
| $174K | ﹤0.01% |
6,900
-17,700
| -72% | -$452K |
|
4790
CALL
RPC Inc
RES
$1.13B
| $174K | ﹤0.01% |
27,900
-1,500
| -5% | -$10.5K |
|
4791
PUT
Atomera
ATOM
$173M
| $173K | ﹤0.01% |
45,600
+41,700
| +1,069% | +$197K |
|
4792
CALL
AtriCure
ATRC
$2.08B
| $173K | ﹤0.01% |
7,600
+7,100
| +1,420% | +$164K |
|
4793
Coherus Oncology
CHRS
$217M
| $173K | ﹤0.01% |
100,247
+83,210
| +488% | +$167K |
|
4794
RCI Hospitality Holdings
RICK
$202M
| $173K | ﹤0.01% |
3,976
-1,369
| -26% | -$66.4K |
|
|
TXNM
4795
CALL
TXNM Energy Inc
TXNM
$6.39B
| $173K | ﹤0.01% |
4,700
+1,900
| +68% | +$70.8K |
|
4796
PUT
Allot
ALLT
$362M
| $172K | ﹤0.01% |
74,200
-29,700
| -29% | -$64.3K |
|
|
BORR
4797
CALL
Borr Drilling
BORR
$1.19B
| $172K | ﹤0.01% |
26,700
+11,500
| +76% | +$69.4K |
|
4798
Cognex
CGNX
$9.62B
| $172K | ﹤0.01% |
+3,679
| New | +$162K |
|
|
DOCU
4799
DocuSign
DOCU
$11.1B
| $172K | ﹤0.01% |
3,223
-677
| -17% | -$38.2K |
|
4800
FuboTV Inc
FUBO
$260M
| $172K | ﹤0.01% |
11,582
-29,815
| -72% | -$477K |
|
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.