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 | |
|---|---|---|---|---|---|---|
6001
PUT
Adient
ADNT
$1.65B
| $71K | ﹤0.01% |
2,400
-2,200
| -48% | -$73.9K |
|
6002
PUT
BGC Group
BGC
$5.38B
| $71K | ﹤0.01% |
21,200
-13,400
| -39% | -$46.7K |
|
6003
Brookdale Senior Living
BKD
$3.43B
| $71K | ﹤0.01% |
15,717
-13,385
| -46% | -$79K |
|
6004
Calix
CALX
$2.35B
| $71K | ﹤0.01% |
2,086
+1,330
| +176% | +$49.4K |
|
6005
CALL
Curis
CRIS
$10M
| $71K | ﹤0.01% |
182
+147
| +420% | +$61.3K |
|
6006
WisdomTree US SmallCap Dividend Fund
DES
$2.21B
| $71K | ﹤0.01% |
+2,529
| New | +$75.9K |
|
6007
Energizer
ENR
$1.45B
| $71K | ﹤0.01% |
2,527
-12,184
| -83% | -$367K |
|
6008
PUT
Fortune Brands Innovations
FBIN
$6.22B
| $71K | ﹤0.01% |
1,404
+234
| +20% | +$13.7K |
|
6009
PUT
Highwoods Properties
HIW
$3.67B
| $71K | ﹤0.01% |
2,100
-200
| -9% | -$7.89K |
|
6010
CALL
Laureate Education
LAUR
$5.18B
| $71K | ﹤0.01% |
6,200
-10,300
| -62% | -$122K |
|
6011
PUT
Lands' End
LE
$382M
| $71K | ﹤0.01% |
6,700
+4,500
| +205% | +$59.1K |
|
6012
PUT
Live Oak Bancshares
LOB
$2.03B
| $71K | ﹤0.01% |
2,100
-600
| -22% | -$24.8K |
|
6013
PUT
MacroGenics
MGNX
$243M
| $71K | ﹤0.01% |
24,100
+19,700
| +448% | +$104K |
|
6014
PUT
New Mountain Finance
NMFC
$683M
| $71K | ﹤0.01% |
6,000
+4,600
| +329% | +$59.2K |
|
6015
Protolabs
PRLB
$1.92B
| $71K | ﹤0.01% |
1,491
-3,099
| -68% | -$144K |
|
6016
PUT
RE/MAX Holdings
RMAX
$195M
| $71K | ﹤0.01% |
2,900
+1,600
| +123% | +$38.8K |
|
6017
PUT
Cartesian Therapeutics
RNAC
$231M
| $71K | ﹤0.01% |
1,807
+1,674
| +1,259% | +$49.6K |
|
6018
PUT
Revvity
RVTY
$12.9B
| $71K | ﹤0.01% |
500
-8,000
| -94% | -$1.2M |
|
|
TGB
6019
CALL
Trekor Metals
TGB
$2.55B
| $71K | ﹤0.01% |
66,200
-91,900
| -58% | -$157K |
|
6020
PUT
Thryv Holdings
THRY
$189M
| $71K | ﹤0.01% |
3,200
+3,000
| +1,500% | +$76.9K |
|
6021
PUT
Titan Machinery
TITN
$423M
| $71K | ﹤0.01% |
3,200
+1,500
| +88% | +$37.4K |
|
6022
CALL
Utz Brands
UTZ
$1.25B
| $71K | ﹤0.01% |
5,200
-5,400
| -51% | -$75.1K |
|
|
NM
6023
PUT
DELISTED
Navios Maritime Holdings Inc.
NM
| $71K | ﹤0.01% |
33,400
+21,700
| +185% | +$70.7K |
|
|
LCI
6024
CALL
DELISTED
Lannett Company, Inc.
LCI
| $71K | ﹤0.01% |
30,925
+11,950
| +63% | +$29.7K |
|
|
LFG
6025
CALL
DELISTED
Archaea Energy Inc.
LFG
| $71K | ﹤0.01% |
4,600
+4,300
| +1,433% | +$87.2K |
|
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.