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 | |
|---|---|---|---|---|---|---|
2826
Incyte
INCY
$24B
| $1.1M | ﹤0.01% |
18,175
+11,745
| +183% | +$665K |
|
|
TWO
2827
PUT
Two Harbors Investment
TWO
$1.27B
| $1.1M | ﹤0.01% |
83,300
+76,400
| +1,107% | +$972K |
|
2828
ICL Group
ICL
$6.67B
| $1.1M | ﹤0.01% |
256,880
-11,112
| -4% | -$52.3K |
|
2829
CALL
Larimar Therapeutics
LRMR
$421M
| $1.1M | ﹤0.01% |
151,700
+59,900
| +65% | +$459K |
|
2830
MSC Industrial Direct
MSM
$7B
| $1.1M | ﹤0.01% |
+13,849
| New | +$1.23M |
|
2831
PUT
Philips
PHG
$25.8B
| $1.09M | ﹤0.01% |
46,808
+44,796
| +2,226% | +$1.01M |
|
2832
CALL
Zeta Global
ZETA
$5B
| $1.09M | ﹤0.01% |
61,700
-31,900
| -34% | -$468K |
|
2833
CALL
Applied Industrial Technologies
AIT
$12.9B
| $1.09M | ﹤0.01% |
5,600
-7,200
| -56% | -$1.37M |
|
2834
PUT
Ericsson
ERIC
$31.7B
| $1.08M | ﹤0.01% |
175,800
+42,700
| +32% | +$239K |
|
2835
CALL
Goodyear
GT
$2.07B
| $1.08M | ﹤0.01% |
95,500
-322,600
| -77% | -$3.95M |
|
2836
CALL
Indivior Pharmaceuticals
INDV
$4.81B
| $1.08M | ﹤0.01% |
+67,200
| New | +$1.21M |
|
2837
CALL
Warby Parker
WRBY
$3.14B
| $1.08M | ﹤0.01% |
67,400
+2,000
| +3% | +$29.6K |
|
2838
CALL
Centrus Energy
LEU
$3.46B
| $1.08M | ﹤0.01% |
25,300
+16,700
| +194% | +$739K |
|
2839
PUT
Hecla Mining
HL
$10.2B
| $1.08M | ﹤0.01% |
222,400
-30,300
| -12% | -$162K |
|
2840
CALL
Simpson Manufacturing
SSD
$8.02B
| $1.08M | ﹤0.01% |
6,400
+5,300
| +482% | +$928K |
|
2841
Viatris
VTRS
$20.4B
| $1.07M | ﹤0.01% |
101,140
-94,143
| -48% | -$1.04M |
|
2842
CALL
Arrow Electronics
ARW
$10.9B
| $1.07M | ﹤0.01% |
8,900
-5,500
| -38% | -$703K |
|
2843
Plug Power
PLUG
$2.94B
| $1.07M | ﹤0.01% |
+461,224
| New | +$1.32M |
|
2844
PUT
Root
ROOT
$948M
| $1.07M | ﹤0.01% |
20,800
-3,200
| -13% | -$185K |
|
2845
Applied Digital
APLD
$7.92B
| $1.07M | ﹤0.01% |
180,285
+174,780
| +3,175% | +$678K |
|
2846
PUT
BJ's Restaurants
BJRI
$1.44B
| $1.07M | ﹤0.01% |
30,900
-12,000
| -28% | -$412K |
|
2847
CALL
Calumet Specialty Products
CLMT
$3.59B
| $1.07M | ﹤0.01% |
66,800
+12,000
| +22% | +$189K |
|
2848
PUT
Lumen
LUMN
$6.53B
| $1.07M | ﹤0.01% |
974,700
-714,700
| -42% | -$906K |
|
2849
CALL
Open Text
OTEX
$5.67B
| $1.07M | ﹤0.01% |
35,700
+25,900
| +264% | +$831K |
|
2850
CALL
Pinnacle Financial Partners Inc
PNFP
$15.6B
| $1.07M | ﹤0.01% |
13,400
+2,200
| +20% | +$176K |
|
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.