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 | |
|---|---|---|---|---|---|---|
|
KRA
6301
PUT
DELISTED
Kraton Corporation
KRA
| $97K | ﹤0.01% |
2,100
+1,600
| +320% | +$73.4K |
|
6302
Agree Realty
ADC
$9.45B
| $96K | ﹤0.01% |
1,348
+1,334
| +9,529% | +$92.5K |
|
6303
PUT
Alamos Gold
AGI
$13.1B
| $96K | ﹤0.01% |
12,500
-66,000
| -84% | -$510K |
|
6304
CALL
Backblaze
BLZE
$1.14B
| $96K | ﹤0.01% |
+5,700
| New | +$126K |
|
6305
PUT
B2Gold
BTG
$5.48B
| $96K | ﹤0.01% |
24,600
-40,200
| -62% | -$161K |
|
6306
PUT
Globalstar
GSAT
$10.7B
| $96K | ﹤0.01% |
5,553
-5,047
| -48% | -$111K |
|
6307
CALL
Lipocine
LPCN
$18M
| $96K | ﹤0.01% |
5,747
-8,688
| -60% | -$161K |
|
|
SCS
6308
CALL
DELISTED
Steelcase
SCS
| $96K | ﹤0.01% |
8,200
-40,100
| -83% | -$483K |
|
6309
PUT
Skillsoft
SKIL
$74.9M
| $96K | ﹤0.01% |
530
-2,670
| -83% | -$615K |
|
6310
CALL
Smith & Nephew
SNN
$12.6B
| $96K | ﹤0.01% |
2,800
-16,000
| -85% | -$550K |
|
6311
CALL
Travere Therapeutics
TVTX
$5.81B
| $96K | ﹤0.01% |
3,100
-100
| -3% | -$2.82K |
|
|
YALA
6312
CALL
Yalla Group
YALA
$818M
| $96K | ﹤0.01% |
14,400
-17,300
| -55% | -$123K |
|
|
LTCH
6313
PUT
DELISTED
Latch, Inc. Common Stock
LTCH
| $96K | ﹤0.01% |
12,800
-2,800
| -18% | -$24.7K |
|
|
IGAC
6314
CALL
DELISTED
IG Acquisition Corp. Class A Common Stock
IGAC
| $96K | ﹤0.01% |
9,800
+3,800
| +63% | +$37.4K |
|
|
LFG
6315
PUT
DELISTED
Archaea Energy Inc.
LFG
| $96K | ﹤0.01% |
+5,300
| New | +$100K |
|
|
POLY
6316
PUT
DELISTED
Plantronics, Inc.
POLY
| $96K | ﹤0.01% |
3,300
-2,200
| -40% | -$60.9K |
|
|
WLL
6317
CALL
DELISTED
Whiting Petroleum Corporation
WLL
| $96K | ﹤0.01% |
107,200
-9,200
| -8% | -$603K |
|
6318
PUT
Aegon
AEG
$14B
| $95K | ﹤0.01% |
20,284
+6,691
| +49% | +$31.3K |
|
6319
PUT
Amplitude
AMPL
$1.32B
| $95K | ﹤0.01% |
+1,800
| New | +$114K |
|
6320
CALL
Axos Financial
AX
$5.89B
| $95K | ﹤0.01% |
1,700
-6,400
| -79% | -$358K |
|
6321
CALL
Cabot Corp
CBT
$4.36B
| $95K | ﹤0.01% |
1,700
+900
| +113% | +$49.5K |
|
6322
CALL
Edgewell Personal Care
EPC
$1.37B
| $95K | ﹤0.01% |
2,100
-4,300
| -67% | -$173K |
|
6323
CALL
1-800-Flowers.com
FLWS
$266M
| $95K | ﹤0.01% |
4,100
-8,000
| -66% | -$232K |
|
|
FOLD
6324
PUT
DELISTED
Amicus Therapeutics
FOLD
| $95K | ﹤0.01% |
8,300
-70,200
| -89% | -$782K |
|
6325
CALL
Genpact
G
$5.97B
| $95K | ﹤0.01% |
1,800
-1,400
| -44% | -$70.5K |
|
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.