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 | |
|---|---|---|---|---|---|---|
|
WIRE
3076
CALL
DELISTED
Encore Wire Corp
WIRE
| $675K | ﹤0.01% |
6,500
+800
| +14% | +$94.5K |
|
|
CTLP
3077
DELISTED
Cantaloupe
CTLP
| $674K | ﹤0.01% |
120,386
+19,791
| +20% | +$105K |
|
3078
PUT
Alliant Energy
LNT
$19.1B
| $674K | ﹤0.01% |
11,500
+10,600
| +1,178% | +$640K |
|
3079
CALL
Vertiv
VRT
$104B
| $674K | ﹤0.01% |
82,000
-244,000
| -75% | -$2.76M |
|
3080
PUT
Silicon Laboratories
SLAB
$7.17B
| $673K | ﹤0.01% |
+4,800
| New | +$672K |
|
3081
PUT
Array Technologies
ARRY
$785M
| $672K | ﹤0.01% |
61,100
-31,500
| -34% | -$311K |
|
|
VSTO
3082
CALL
DELISTED
Vista Outdoor Inc.
VSTO
| $672K | ﹤0.01% |
24,100
+5,600
| +30% | +$200K |
|
3083
PUT
Cerence
CRNC
$368M
| $671K | ﹤0.01% |
26,600
-9,300
| -26% | -$278K |
|
|
MCW
3084
CALL
DELISTED
Mister Car Wash
MCW
| $670K | ﹤0.01% |
61,600
+61,500
| +61,500% | +$801K |
|
3085
CALL
Ubiquiti
UI
$32.4B
| $670K | ﹤0.01% |
2,700
-1,400
| -34% | -$373K |
|
3086
Tanger
SKT
$4.84B
| $668K | ﹤0.01% |
+47,005
| New | +$780K |
|
|
GPP
3087
CALL
DELISTED
Green Plains Partners LP
GPP
| $668K | ﹤0.01% |
54,900
+19,000
| +53% | +$249K |
|
3088
PUT
Editas Medicine
EDIT
$402M
| $667K | ﹤0.01% |
56,400
-25,100
| -31% | -$336K |
|
3089
Ligand Pharmaceuticals
LGND
$5.94B
| $667K | ﹤0.01% |
11,986
+11,754
| +5,066% | +$667K |
|
3090
CALL
ZTO Express
ZTO
$18.2B
| $667K | ﹤0.01% |
24,300
-11,200
| -32% | -$287K |
|
3091
PUT
Brunswick
BC
$5.33B
| $666K | ﹤0.01% |
10,200
-11,100
| -52% | -$816K |
|
|
KNDI
3092
CALL
Kandi Technologies Group
KNDI
$63.5M
| $666K | ﹤0.01% |
277,700
+51,400
| +23% | +$134K |
|
3093
PUT
Lightwave Logic
LWLG
$887M
| $666K | ﹤0.01% |
101,900
-204,300
| -67% | -$1.78M |
|
3094
CALL
SunCoke Energy
SXC
$779M
| $666K | ﹤0.01% |
97,800
+71,900
| +278% | +$580K |
|
3095
PUT
OneMain Financial
OMF
$7.19B
| $665K | ﹤0.01% |
17,800
-44,500
| -71% | -$1.92M |
|
|
DCH
3096
PUT
Dauch Corp
DCH
$1.33B
| $664K | ﹤0.01% |
88,200
-3,000
| -3% | -$22.6K |
|
3097
PUT
Madison Square Garden
MSGS
$9.58B
| $664K | ﹤0.01% |
4,400
-1,600
| -27% | -$260K |
|
|
STRY
3098
CALL
DELISTED
Starry Group Holdings, Inc.
STRY
| $664K | ﹤0.01% |
+161,400
| New | +$1.19M |
|
3099
CALL
Cullen/Frost Bankers
CFR
$10.5B
| $663K | ﹤0.01% |
5,700
+1,400
| +33% | +$179K |
|
3100
PUT
Sprouts Farmers Market
SFM
$7.31B
| $663K | ﹤0.01% |
26,200
-19,000
| -42% | -$528K |
|
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.