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 | |
|---|---|---|---|---|---|---|
|
RXDX
4001
DELISTED
Prometheus Biosciences, Inc. Common Stock
RXDX
| $323K | ﹤0.01% |
+11,448
| New | +$332K |
|
4002
PUT
McEwen Inc
MUX
$1B
| $322K | ﹤0.01% |
73,360
+31,270
| +74% | +$195K |
|
|
OLPX
4003
PUT
DELISTED
Olaplex Holdings
OLPX
| $322K | ﹤0.01% |
22,900
-23,900
| -51% | -$353K |
|
4004
PUT
Sutro Biopharma
STRO
$386M
| $322K | ﹤0.01% |
+6,190
| New | +$346K |
|
4005
Truist Financial
TFC
$63.9B
| $322K | ﹤0.01% |
6,790
-30,798
| -82% | -$1.52M |
|
4006
CALL
Tootsie Roll Industries
TR
$2.97B
| $322K | ﹤0.01% |
10,261
-3,156
| -24% | -$95.4K |
|
|
EDR
4007
CALL
DELISTED
Endeavor Group Holdings, Inc.
EDR
| $322K | ﹤0.01% |
15,700
+2,300
| +17% | +$52.2K |
|
4008
PUT
Valaris
VAL
$5.14B
| $321K | ﹤0.01% |
7,600
+7,000
| +1,167% | +$377K |
|
4009
PUT
Hartford Financial Services
HIG
$39.9B
| $320K | ﹤0.01% |
4,900
+1,000
| +26% | +$70.1K |
|
|
LADR
4010
PUT
Ladder Capital
LADR
$1.24B
| $320K | ﹤0.01% |
30,400
+15,400
| +103% | +$175K |
|
4011
CALL
Momentus
MNTS
$78.4M
| $320K | ﹤0.01% |
12
-7
| -37% | -$255K |
|
4012
PUT
Plains GP Holdings
PAGP
$5.28B
| $320K | ﹤0.01% |
31,100
+26,000
| +510% | +$299K |
|
4013
CALL
Sphere Entertainment
SPHR
$5.02B
| $320K | ﹤0.01% |
6,100
-3,400
| -36% | -$230K |
|
4014
PUT
2x Long VIX Futures ETF
UVIX
$300M
| $320K | ﹤0.01% |
+2
| New | +$372K |
|
4015
CALL
American Financial Group
AFG
$11.9B
| $319K | ﹤0.01% |
2,300
+2,000
| +667% | +$281K |
|
4016
CALL
G-III Apparel Group
GIII
$1.54B
| $319K | ﹤0.01% |
15,800
+12,200
| +339% | +$308K |
|
|
ITOS
4017
CALL
DELISTED
iTeos Therapeutics
ITOS
| $319K | ﹤0.01% |
15,500
+14,600
| +1,622% | +$346K |
|
4018
CALL
Oxford Industries
OXM
$581M
| $319K | ﹤0.01% |
3,600
+800
| +29% | +$71.8K |
|
|
SPTN
4019
CALL
DELISTED
SpartanNash
SPTN
| $319K | ﹤0.01% |
10,600
+7,900
| +293% | +$262K |
|
|
PENG
4020
PUT
Penguin Solutions Inc
PENG
$2.24B
| $319K | ﹤0.01% |
19,500
-53,600
| -73% | -$1.22M |
|
4021
CALL
Aspen Aerogels
ASPN
$339M
| $318K | ﹤0.01% |
32,200
+600
| +2% | +$12.1K |
|
4022
CALL
Goldgroup Mining Inc.
GORO
$155M
| $318K | ﹤0.01% |
195,200
+179,900
| +1,176% | +$354K |
|
4023
CALL
Navient
NAVI
$819M
| $318K | ﹤0.01% |
22,800
-2,400
| -10% | -$37.3K |
|
|
CMBT
4024
PUT
CMB.TECH NV
CMBT
$4.52B
| $318K | ﹤0.01% |
26,700
+17,200
| +181% | +$207K |
|
|
DCH
4025
CALL
Dauch Corp
DCH
$1.31B
| $317K | ﹤0.01% |
42,200
+24,300
| +136% | +$183K |
|
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.