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 |
Apple
AAPL
|
+$286M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$82.3M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$72.6M |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$64.2M |
| 5 |
Intel
INTC
|
+$52.9M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$51.5M |
| 2 |
iShares Silver Trust
SLV
|
+$41.8M |
| 3 |
Ford
F
|
+$26.3M |
| 4 |
United Airlines
UAL
|
+$22.7M |
| 5 |
ExxonMobil
XOM
|
+$22.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.84% |
| 2 | Communication Services | 0.32% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.28% |
| 5 | Healthcare | 0.2% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
ASTR
4076
CALL
DELISTED
Astra Space, Inc. Class A Common Stock
ASTR
| $305K | ﹤0.01% |
15,653
-3,187
| -17% | -$130K |
|
4077
CALL
AnaptysBio
ANAB
$1.54B
| $304K | ﹤0.01% |
+15,000
| New | +$332K |
|
4078
PUT
Alexandria Real Estate Equities
ARE
$9.37B
| $304K | ﹤0.01% |
2,100
+900
| +75% | +$153K |
|
4079
CALL
CVR Energy
CVI
$3.48B
| $304K | ﹤0.01% |
9,100
-19,400
| -68% | -$619K |
|
|
FPI
4080
PUT
Farmland Partners
FPI
$415M
| $304K | ﹤0.01% |
22,100
-1,200
| -5% | -$17.5K |
|
4081
CALL
PACCAR
PCAR
$70.5B
| $304K | ﹤0.01% |
5,550
-11,400
| -67% | -$642K |
|
|
SWCH
4082
PUT
DELISTED
Switch, Inc. Class A Common Stock
SWCH
| $304K | ﹤0.01% |
9,100
-88,000
| -91% | -$2.84M |
|
|
INFA
4083
CALL
DELISTED
Informatica
INFA
| $303K | ﹤0.01% |
14,600
+1,800
| +14% | +$35.6K |
|
4084
Orion
OEC
$403M
| $303K | ﹤0.01% |
19,525
-19,912
| -50% | -$334K |
|
|
ME
4085
DELISTED
23andMe Holding Co
ME
| $303K | ﹤0.01% |
6,120
-3,248
| -35% | -$188K |
|
|
NVTA
4086
CALL
DELISTED
Invitae Corporation
NVTA
| $303K | ﹤0.01% |
124,200
-43,500
| -26% | -$192K |
|
4087
CALL
West Pharmaceutical
WST
$23.7B
| $302K | ﹤0.01% |
1,000
-2,900
| -74% | -$944K |
|
|
LFC
4088
CALL
DELISTED
China Life Insurance Company Ltd.
LFC
| $302K | ﹤0.01% |
+35,000
| New | +$267K |
|
4089
PUT
Lloyds Banking Group
LYG
$85.2B
| $301K | ﹤0.01% |
147,700
-8,500
| -5% | -$18.8K |
|
4090
PUT
Sensata Technologies
ST
$6.69B
| $301K | ﹤0.01% |
7,300
+7,200
| +7,200% | +$331K |
|
|
LEV
4091
CALL
DELISTED
The Lion Electric Company
LEV
| $301K | ﹤0.01% |
71,700
-36,200
| -34% | -$212K |
|
|
LFC
4092
DELISTED
China Life Insurance Company Ltd.
LFC
| $301K | ﹤0.01% |
34,923
+22,150
| +173% | +$169K |
|
4093
CALL
Lightwave Logic
LWLG
$823M
| $300K | ﹤0.01% |
46,000
-8,300
| -15% | -$72.1K |
|
4094
CALL
Red Rock Resorts
RRR
$3.84B
| $300K | ﹤0.01% |
9,000
-12,300
| -58% | -$492K |
|
4095
PUT
TC Energy
TRP
$70.1B
| $300K | ﹤0.01% |
5,800
+1,200
| +26% | +$67K |
|
4096
Vipshop
VIPS
$7.26B
| $300K | ﹤0.01% |
30,428
-151,139
| -83% | -$1.33M |
|
4097
PUT
WaFd
WAFD
$2.71B
| $300K | ﹤0.01% |
+10,000
| New | +$314K |
|
|
CTLT
4098
CALL
DELISTED
CATALENT, INC.
CTLT
| $300K | ﹤0.01% |
2,800
-16,700
| -86% | -$1.7M |
|
4099
iShares Asia 50 ETF
AIA
$4.3B
| $299K | ﹤0.01% |
4,767
+4,167
| +695% | +$267K |
|
4100
PUT
Arrowhead Research
ARWR
$12.1B
| $299K | ﹤0.01% |
8,500
-3,400
| -29% | -$128K |
|
Similar funds
Simplex Trading's Q2 2022 Portfolio in Review
As of Q2 2022, Simplex Trading held 11,810 positions worth $94.1B, down 14% from $109B the previous quarter. Its ten largest holdings account for 40% of the portfolio.
Simplex Trading deployed $11.3B of net new capital in Q2 2022, opening 1,405 new positions and adding to 4,027 existing holdings. Its largest new stake was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
By sector, the portfolio is most concentrated in Technology at 0.84% of assets, up from 0.67% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was United Airlines, an estimated $22.7M trimmed.
- Simplex Trading's largest Q2 2022 buy was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
- Simplex Trading added most to Apple in Q2 2022, an estimated $286M increase.
- Simplex Trading's biggest Q2 2022 reduction was United Airlines, cutting an estimated $22.7M.
- Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2022, selling an estimated $51.5M.
- Simplex Trading's ten largest holdings make up 40% of its $94.1B portfolio in Q2 2022.
- Simplex Trading opened 1,405 new positions and closed 1,792 in Q2 2022.
- Simplex Trading's portfolio value fell 14% quarter-over-quarter to $94.1B.
Based on Simplex Trading's 13F filing for Q2 2022, filed 3 Aug 2022.