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 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.6M |
| 2 |
Shopify
SHOP
|
+$39.6M |
| 3 |
iShares China Large-Cap ETF
FXI
|
+$35.4M |
| 4 |
Verizon
VZ
|
+$34.1M |
| 5 |
KraneShares CSI China Internet ETF
KWEB
|
+$34.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
AMC Entertainment Holdings
AMC
|
+$49.5M |
| 2 |
GE Aerospace
GE
|
+$35.2M |
| 3 |
Carnival Corporation Ltd
CCL
|
+$30.5M |
| 4 |
Advanced Micro Devices
AMD
|
+$28.8M |
| 5 |
Micron Technology
MU
|
+$23.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.61% |
| 2 | Consumer Discretionary | 0.43% |
| 3 | Healthcare | 0.35% |
| 4 | Communication Services | 0.23% |
| 5 | Financials | 0.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2301
PUT
Transocean
RIG
$5.92B
| $1.58M | ﹤0.01% |
573,300
-233,400
| -29% | -$792K |
|
2302
PUT
Motorola Solutions
MSI
$69.4B
| $1.57M | ﹤0.01% |
5,800
+1,600
| +38% | +$403K |
|
2303
PUT
Nokia
NOK
$50.8B
| $1.57M | ﹤0.01% |
253,000
-1,351,600
| -84% | -$7.88M |
|
2304
CALL
Yeti Holdings
YETI
$3.82B
| $1.57M | ﹤0.01% |
19,000
-12,500
| -40% | -$1.15M |
|
|
BLDP
2305
Ballard Power Systems
BLDP
$874M
| $1.57M | ﹤0.01% |
+125,215
| New | +$1.89M |
|
2306
PUT
Gogo Inc
GOGO
$515M
| $1.57M | ﹤0.01% |
116,200
+8,100
| +7% | +$120K |
|
2307
CALL
Arqit Quantum
ARQQ
$290M
| $1.57M | ﹤0.01% |
+2,624
| New | +$1.46M |
|
2308
CALL
B&G Foods
BGS
$285M
| $1.57M | ﹤0.01% |
51,100
-69,600
| -58% | -$2.13M |
|
|
PENG
2309
PUT
Penguin Solutions Inc
PENG
$2.76B
| $1.57M | ﹤0.01% |
44,200
-197,400
| -82% | -$5.6M |
|
2310
CALL
Ironwood Pharmaceuticals
IRWD
$611M
| $1.56M | ﹤0.01% |
134,300
+95,200
| +243% | +$1.17M |
|
|
GPMT
2311
PUT
Granite Point Mortgage Trust
GPMT
$63.7M
| $1.56M | ﹤0.01% |
133,600
+121,500
| +1,004% | +$1.56M |
|
2312
CALL
PagerDuty
PD
$700M
| $1.56M | ﹤0.01% |
45,000
+3,100
| +7% | +$120K |
|
2313
CALL
Consolidated Edison
ED
$41.6B
| $1.56M | ﹤0.01% |
18,300
-28,600
| -61% | -$2.25M |
|
2314
Scorpio Tankers
STNG
$3.96B
| $1.56M | ﹤0.01% |
121,931
+81,337
| +200% | +$1.25M |
|
2315
PUT
Omnicom Group
OMC
$22.7B
| $1.56M | ﹤0.01% |
21,300
-400
| -2% | -$28.4K |
|
|
RC
2316
CALL
Ready Capital
RC
$265M
| $1.56M | ﹤0.01% |
99,800
+76,700
| +332% | +$1.2M |
|
2317
CALL
Church & Dwight Co
CHD
$23.1B
| $1.56M | ﹤0.01% |
15,200
-39,000
| -72% | -$3.54M |
|
2318
PUT
Philips
PHG
$25.4B
| $1.56M | ﹤0.01% |
51,209
+33,050
| +182% | +$1.12M |
|
2319
PUT
Ericsson
ERIC
$30.7B
| $1.56M | ﹤0.01% |
143,200
-55,200
| -28% | -$603K |
|
|
GTM
2320
CALL
ZoomInfo Technologies
GTM
$861M
| $1.55M | ﹤0.01% |
24,200
-15,200
| -39% | -$1.02M |
|
2321
CALL
Inovio Pharmaceuticals
INO
$79.8M
| $1.55M | ﹤0.01% |
25,908
-300
| -1% | -$24K |
|
2322
Sprott Uranium Miners ETF
URNM
$1.78B
| $1.55M | ﹤0.01% |
43,084
+42,284
| +5,286% | +$1.82M |
|
2323
ArcBest
ARCB
$3.44B
| $1.55M | ﹤0.01% |
12,932
+6,795
| +111% | +$692K |
|
2324
PUT
Otis Worldwide
OTIS
$27.4B
| $1.55M | ﹤0.01% |
17,800
-83,600
| -82% | -$7M |
|
2325
PUT
Banco Santander
SAN
$194B
| $1.55M | ﹤0.01% |
470,900
+3,900
| +0.8% | +$13.7K |
|
Similar funds
Simplex Trading's Q4 2021 Portfolio in Review
As of Q4 2021, Simplex Trading held 12,077 positions worth $99B, down 7.5% from $107B the previous quarter. Its ten largest holdings account for 33% of the portfolio.
Simplex Trading withdrew a net $10.8B in Q4 2021, closing 1,645 positions and reducing 4,258 holdings. Its most notable exit was Carnival Corporation Ltd, an estimated $30.5M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.61% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in iShares China Large-Cap ETF worth $33M.
- Simplex Trading's largest Q4 2021 buy was iShares China Large-Cap ETF: 902,666 shares worth $33M.
- Simplex Trading added most to State Street Financial Select Sector SPDR ETF in Q4 2021, an estimated $42.6M increase.
- Simplex Trading's biggest Q4 2021 reduction was AMC Entertainment Holdings, cutting an estimated $49.5M.
- Simplex Trading fully exited Carnival Corporation Ltd in Q4 2021, selling an estimated $30.5M.
- Simplex Trading's ten largest holdings make up 33% of its $99B portfolio in Q4 2021.
- Simplex Trading opened 2,269 new positions and closed 1,645 in Q4 2021.
- Simplex Trading's portfolio value fell 7.5% quarter-over-quarter to $99B.
Based on Simplex Trading's 13F filing for Q4 2021, filed 4 Feb 2022.