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 | |
|---|---|---|---|---|---|---|
|
PLCY
4851
PUT
DELISTED
EventShares U.S. Legislative Opportunities ETF
PLCY
| $163K | ﹤0.01% |
9,900
-1,200
| -11% | -$19.8K |
|
4852
Diana Shipping
DSX
$266M
| $162K | ﹤0.01% |
56,922
+47,826
| +526% | +$142K |
|
|
JBGS
4853
CALL
JBG SMITH
JBGS
$846M
| $162K | ﹤0.01% |
+10,700
| New | +$158K |
|
|
FIRY
4854
CALL
Firy Inc
FIRY
$154M
| $162K | ﹤0.01% |
22,600
+2,400
| +12% | +$15.6K |
|
|
QVCGA
4855
DELISTED
QVC Group Inc Series A
QVCGA
| $162K | ﹤0.01% |
5,149
-7,500
| -59% | -$312K |
|
|
SBOW
4856
PUT
DELISTED
SilverBow Resources, Inc.
SBOW
| $162K | ﹤0.01% |
4,300
-3,500
| -45% | -$123K |
|
4857
CALL
Cerence
CRNC
$359M
| $161K | ﹤0.01% |
57,000
+52,800
| +1,257% | +$376K |
|
4858
CALL
Intapp
INTA
$2.44B
| $161K | ﹤0.01% |
4,400
-4,200
| -49% | -$143K |
|
|
KNDI
4859
CALL
Kandi Technologies Group
KNDI
$66.5M
| $161K | ﹤0.01% |
73,600
+70,000
| +1,944% | +$154K |
|
4860
Everspin Technologies
MRAM
$303M
| $161K | ﹤0.01% |
26,954
+18,149
| +206% | +$120K |
|
4861
CALL
Xeris Biopharma Holdings
XERS
$1.45B
| $161K | ﹤0.01% |
71,600
-21,300
| -23% | -$42.9K |
|
4862
CALL
Allogene Therapeutics
ALLO
$625M
| $160K | ﹤0.01% |
68,700
-2,000
| -3% | -$5.9K |
|
|
BCIM
4863
CALL
DELISTED
abrdn Bloomberg Industrial Metals Strategy K-1 Free ETF
BCIM
| $160K | ﹤0.01% |
7,900
+7,400
| +1,480% | +$178K |
|
4864
PUT
PAR Technology
PAR
$716M
| $160K | ﹤0.01% |
3,400
-1,200
| -26% | -$53.1K |
|
4865
CALL
Protolabs
PRLB
$1.7B
| $160K | ﹤0.01% |
5,200
-500
| -9% | -$15.8K |
|
4866
CALL
Vericel Corp
VCEL
$2.38B
| $160K | ﹤0.01% |
3,500
-2,300
| -40% | -$108K |
|
4867
ProFrac Holding
ACDC
$653M
| $159K | ﹤0.01% |
21,513
-14,157
| -40% | -$117K |
|
4868
PUT
AdaptHealth
AHCO
$1.47B
| $159K | ﹤0.01% |
15,900
+5,400
| +51% | +$54.9K |
|
4869
CALL
American States Water
AWR
$3.44B
| $159K | ﹤0.01% |
2,200
+2,100
| +2,100% | +$152K |
|
|
GRRR
4870
PUT
Gorilla Technology Group
GRRR
$296M
| $159K | ﹤0.01% |
57,500
+52,930
| +1,158% | +$282K |
|
4871
CALL
Standard BioTools
LAB
$342M
| $159K | ﹤0.01% |
89,900
-227,100
| -72% | -$555K |
|
4872
PUT
Lindsay Corp
LNN
$1.14B
| $159K | ﹤0.01% |
1,300
+1,000
| +333% | +$116K |
|
4873
Mid-America Apartment Communities
MAA
$16B
| $159K | ﹤0.01% |
1,116
-6,178
| -85% | -$826K |
|
4874
PUT
News Corp Class B
NWS
$17.7B
| $159K | ﹤0.01% |
5,800
-25,300
| -81% | -$673K |
|
4875
PetMed Express
PETS
$42.3M
| $159K | ﹤0.01% |
39,350
+27,305
| +227% | +$117K |
|
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.