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 | |
|---|---|---|---|---|---|---|
3151
CALL
Enovix
ENVX
$866M
| $642K | ﹤0.01% |
82,400
-29,371
| -26% | -$276K |
|
3152
PUT
F5
FFIV
$22.8B
| $642K | ﹤0.01% |
4,200
+200
| +5% | +$34.8K |
|
3153
CALL
Jazz Pharmaceuticals
JAZZ
$16.1B
| $639K | ﹤0.01% |
4,100
-1,000
| -20% | -$154K |
|
3154
PUT
Trinity Capital Inc.
TRIN
$1.59B
| $638K | ﹤0.01% |
44,100
+17,600
| +66% | +$288K |
|
3155
PUT
Wyndham Hotels & Resorts
WH
$5.62B
| $637K | ﹤0.01% |
9,700
+600
| +7% | +$47.3K |
|
3156
Digital Turbine
APPS
$1.02B
| $636K | ﹤0.01% |
36,409
-3,480
| -9% | -$94.4K |
|
3157
Genuine Parts
GPC
$17.9B
| $636K | ﹤0.01% |
+4,784
| New | +$637K |
|
|
GTLS
3158
CALL
DELISTED
Chart Industries
GTLS
| $636K | ﹤0.01% |
3,800
+2,500
| +192% | +$427K |
|
3159
CALL
Vanguard S&P 500 Growth ETF
VOOG
$25.2B
| $636K | ﹤0.01% |
+22,200
| New | +$883K |
|
3160
ProShares UltraPro Short 20+ Year Treasury
TTT
$18.1M
| $634K | ﹤0.01% |
10,986
-2,758
| -20% | -$154K |
|
|
ETRN
3161
DELISTED
Equitrans Midstream Corporation Common Stock
ETRN
| $634K | ﹤0.01% |
99,712
+13,812
| +16% | +$107K |
|
3162
CALL
Backblaze
BLZE
$724M
| $633K | ﹤0.01% |
121,100
+120,200
| +13,356% | +$902K |
|
|
GBT
3163
CALL
DELISTED
Global Blood Therapeutics, Inc.
GBT
| $632K | ﹤0.01% |
19,800
+13,900
| +236% | +$407K |
|
3164
PUT
American Vanguard Corp
AVD
$74.1M
| $630K | ﹤0.01% |
28,200
+7,800
| +38% | +$174K |
|
3165
CALL
Brixmor Property Group
BRX
$9.77B
| $630K | ﹤0.01% |
31,200
-12,800
| -29% | -$303K |
|
|
CVSA
3166
CALL
Covista Inc
CVSA
$4.3B
| $629K | ﹤0.01% |
17,500
| – | – |
|
|
ACRE
3167
CALL
Ares Commercial Real Estate
ACRE
$256M
| $628K | ﹤0.01% |
51,400
+31,200
| +154% | +$453K |
|
3168
AeroVironment
AVAV
$7.91B
| $628K | ﹤0.01% |
7,640
+7,438
| +3,682% | +$661K |
|
3169
Aurinia Pharmaceuticals
AUPH
$1.92B
| $627K | ﹤0.01% |
62,421
-119,478
| -66% | -$1.34M |
|
3170
BGC Group
BGC
$5.73B
| $626K | ﹤0.01% |
+185,878
| New | +$648K |
|
3171
PUT
Marqeta
MQ
$1.9B
| $626K | ﹤0.01% |
19,300
-12,875
| -40% | -$506K |
|
3172
CALL
PubMatic
PUBM
$605M
| $626K | ﹤0.01% |
39,400
-12,100
| -23% | -$259K |
|
3173
CALL
Quest Diagnostics
DGX
$26B
| $625K | ﹤0.01% |
4,700
-20,100
| -81% | -$2.74M |
|
3174
PUT
GlobalFoundries
GFS
$26.9B
| $625K | ﹤0.01% |
15,500
-33,900
| -69% | -$1.79M |
|
3175
CALL
Amplify Energy
AMPY
$152M
| $624K | ﹤0.01% |
95,500
-46,800
| -33% | -$345K |
|
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.