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 | |
|---|---|---|---|---|---|---|
5326
PUT
RLX Technology
RLX
$2.47B
| $119K | ﹤0.01% |
55,900
-168,200
| -75% | -$338K |
|
5327
PUT
ProShares UltraShort Industrials
SIJ
$5.89M
| $119K | ﹤0.01% |
700
+475
| +211% | +$33.4K |
|
|
WSR
5328
PUT
DELISTED
Whitestone REIT
WSR
| $119K | ﹤0.01% |
11,100
-600
| -5% | -$7.21K |
|
|
NS
5329
PUT
DELISTED
NuStar Energy L.P.
NS
| $119K | ﹤0.01% |
8,500
-18,000
| -68% | -$271K |
|
|
MDC
5330
PUT
DELISTED
M.D.C. Holdings, Inc.
MDC
| $119K | ﹤0.01% |
3,700
-5,400
| -59% | -$193K |
|
|
AMTI
5331
DELISTED
Applied Molecular Transport Inc. Common Stock
AMTI
| $119K | ﹤0.01% |
40,912
+40,558
| +11,457% | +$170K |
|
5332
CALL
Build-A-Bear
BBW
$425M
| $118K | ﹤0.01% |
7,200
-19,700
| -73% | -$360K |
|
5333
Cigna
CI
$73.7B
| $118K | ﹤0.01% |
+451
| New | +$116K |
|
|
FENG
5334
Phoenix New Media
FENG
$18.3M
| $118K | ﹤0.01% |
+23,689
| New | +$85.6K |
|
5335
National Beverage
FIZZ
$2.96B
| $118K | ﹤0.01% |
2,420
+1,475
| +156% | +$68.8K |
|
5336
PUT
Group 1 Automotive
GPI
$3.42B
| $118K | ﹤0.01% |
700
-3,000
| -81% | -$522K |
|
5337
CALL
Hyliion Holdings
HYLN
$635M
| $118K | ﹤0.01% |
36,700
-39,100
| -52% | -$137K |
|
5338
CALL
MINISO
MNSO
$3.88B
| $118K | ﹤0.01% |
15,100
-200
| -1% | -$1.36K |
|
5339
PUT
MGIC Investment
MTG
$6.16B
| $118K | ﹤0.01% |
9,400
+100
| +1% | +$1.31K |
|
5340
-1x Short VIX Futures ETF
SVIX
$174M
| $118K | ﹤0.01% |
+11,372
| New | +$131K |
|
5341
PUT
Telephone and Data Systems
TDS
$3.82B
| $118K | ﹤0.01% |
7,500
-100
| -1% | -$1.79K |
|
5342
CALL
Xenon Pharmaceuticals
XENE
$6.06B
| $118K | ﹤0.01% |
3,900
+1,000
| +34% | +$30.2K |
|
|
PLAN
5343
CALL
DELISTED
Anaplan, Inc.
PLAN
| $118K | ﹤0.01% |
43,800
-12,000
| -22% | -$777K |
|
5344
Apyx Medical
APYX
$173M
| $117K | ﹤0.01% |
+20,112
| New | +$103K |
|
5345
Altisource Portfolio Solutions
ASPS
$63.6M
| $117K | ﹤0.01% |
1,364
+380
| +39% | +$33.1K |
|
|
BRY
5346
DELISTED
Berry Corp
BRY
| $117K | ﹤0.01% |
15,436
+5,659
| +58% | +$59.8K |
|
5347
PUT
CEVA Inc
CEVA
$910M
| $117K | ﹤0.01% |
3,500
-2,100
| -38% | -$74.1K |
|
5348
PUT
Cytokinetics
CYTK
$10.5B
| $117K | ﹤0.01% |
3,000
-1,700
| -36% | -$68.4K |
|
5349
Ginkgo Bioworks
DNA
$528M
| $117K | ﹤0.01% |
1,236
-4,909
| -80% | -$599K |
|
|
DRD
5350
CALL
DRDGold
DRD
$1.77B
| $117K | ﹤0.01% |
20,100
-700
| -3% | -$5.19K |
|
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.