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 | |
|---|---|---|---|---|---|---|
2001
CALL
Sempra
SRE
$60.8B
| $1.76M | ﹤0.01% |
23,400
-3,600
| -13% | -$289K |
|
2002
CALL
HF Sinclair
DINO
$15.9B
| $1.76M | ﹤0.01% |
38,900
-134,000
| -78% | -$6M |
|
2003
CALL
Kanzhun
BZ
$6.89B
| $1.75M | ﹤0.01% |
66,800
+700
| +1% | +$15.5K |
|
|
FOLD
2004
CALL
DELISTED
Amicus Therapeutics
FOLD
| $1.75M | ﹤0.01% |
163,400
+151,500
| +1,273% | +$1.25M |
|
2005
PUT
GFL Environmental
GFL
$14.3B
| $1.75M | ﹤0.01% |
68,000
-34,500
| -34% | -$1.02M |
|
2006
CALL
Costamare
CMRE
$1.9B
| $1.75M | ﹤0.01% |
144,900
+50,600
| +54% | +$703K |
|
|
FITB
2007
CALL
Fifth Third Bancorp
FITB
$52B
| $1.75M | ﹤0.01% |
52,200
-12,600
| -19% | -$473K |
|
|
SAFE
2008
PUT
Safehold
SAFE
$1.19B
| $1.75M | ﹤0.01% |
26,276
+5,896
| +29% | +$497K |
|
2009
CALL
Acadia Pharmaceuticals
ACAD
$4.25B
| $1.75M | ﹤0.01% |
124,300
-23,200
| -16% | -$433K |
|
|
JKS
2010
JinkoSolar
JKS
$775M
| $1.75M | ﹤0.01% |
25,320
+17,620
| +229% | +$988K |
|
|
SJT
2011
CALL
San Juan Basin Royalty Trust
SJT
$117M
| $1.75M | ﹤0.01% |
201,700
+98,700
| +96% | +$1.07M |
|
|
Y
2012
CALL
DELISTED
Alleghany Corp
Y
| $1.75M | ﹤0.01% |
2,100
-1,800
| -46% | -$1.51M |
|
2013
Global Payments
GPN
$22.1B
| $1.75M | ﹤0.01% |
15,782
+7,774
| +97% | +$983K |
|
2014
PUT
Hyatt Hotels
H
$17.6B
| $1.74M | ﹤0.01% |
23,600
-116,600
| -83% | -$10.1M |
|
2015
PUT
Corpay
CPAY
$24.2B
| $1.74M | ﹤0.01% |
8,300
-4,500
| -35% | -$1.07M |
|
|
TRTN
2016
CALL
DELISTED
Triton International Limited
TRTN
| $1.74M | ﹤0.01% |
33,100
+26,300
| +387% | +$1.59M |
|
2017
PUT
Lightspeed Commerce
LSPD
$1.3B
| $1.74M | ﹤0.01% |
78,000
+26,100
| +50% | +$615K |
|
2018
CALL
TAL Education Group
TAL
$5.71B
| $1.74M | ﹤0.01% |
357,000
-32,400
| -8% | -$124K |
|
|
ONEM
2019
CALL
DELISTED
1Life Healthcare
ONEM
| $1.74M | ﹤0.01% |
221,500
+201,300
| +997% | +$1.73M |
|
2020
CALL
Corsair Gaming
CRSR
$1.05B
| $1.74M | ﹤0.01% |
132,200
-21,600
| -14% | -$352K |
|
2021
CALL
DaVita
DVA
$15.1B
| $1.74M | ﹤0.01% |
21,700
-10,800
| -33% | -$1.09M |
|
2022
CALL
JELD-WEN Holding
JELD
$94.8M
| $1.73M | ﹤0.01% |
118,800
+68,200
| +135% | +$1.24M |
|
2023
Tradeweb Markets
TW
$21.3B
| $1.73M | ﹤0.01% |
+25,376
| New | +$1.84M |
|
2024
CALL
Assured Guaranty
AGO
$3.78B
| $1.73M | ﹤0.01% |
31,000
+28,600
| +1,192% | +$1.65M |
|
2025
PUT
Green Plains
GPRE
$1.19B
| $1.73M | ﹤0.01% |
63,600
-9,500
| -13% | -$297K |
|
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.