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 | |
|---|---|---|---|---|---|---|
|
IPFF
576
PUT
DELISTED
iShares International Preferred Stock ETF
IPFF
| $17M | 0.02% |
342,600
+7,900
| +2% | +$392K |
|
577
PUT
Sunrun
RUN
$2.52B
| $16.9M | 0.02% |
492,300
+312,120
| +173% | +$14.6M |
|
578
PUT
Live Nation Entertainment
LYV
$41.3B
| $16.8M | 0.02% |
140,600
+68,200
| +94% | +$7.35M |
|
579
PUT
Ulta Beauty
ULTA
$20.8B
| $16.8M | 0.02% |
40,800
+8,300
| +26% | +$3.22M |
|
580
CALL
Best Buy
BBY
$18B
| $16.8M | 0.02% |
165,100
+66,600
| +68% | +$7.58M |
|
581
CALL
EOG Resources
EOG
$78.3B
| $16.6M | 0.02% |
187,200
+73,200
| +64% | +$6.57M |
|
|
SHNY
582
CALL
DELISTED
Direxion Daily Silver Miners Index Bull 2X Shares
SHNY
| $16.6M | 0.02% |
826,500
-141,500
| -15% | -$2.84M |
|
583
CALL
QuantumScape Corp
QS
$3.19B
| $16.4M | 0.02% |
741,000
+137,300
| +23% | +$3.76M |
|
584
PUT
Kroger
KR
$34.2B
| $16.4M | 0.02% |
362,600
-93,300
| -20% | -$3.92M |
|
585
CALL
CME Group
CME
$92.9B
| $16.3M | 0.02% |
71,500
+26,200
| +58% | +$5.76M |
|
586
PUT
Petrobras
PBR
$124B
| $16.3M | 0.02% |
1,483,900
+677,700
| +84% | +$7.15M |
|
587
Baidu
BIDU
$36.4B
| $16.1M | 0.02% |
108,275
-35,461
| -25% | -$5.54M |
|
588
PUT
Fidelity National Information Services
FIS
$20.8B
| $16.1M | 0.02% |
147,400
+140,700
| +2,100% | +$15.9M |
|
|
VMW
589
CALL
DELISTED
VMware, Inc
VMW
| $16.1M | 0.02% |
138,700
+29,000
| +26% | +$3.81M |
|
590
PUT
Darden Restaurants
DRI
$22.2B
| $16.1M | 0.02% |
106,600
-122,400
| -53% | -$18.1M |
|
591
Roblox
RBLX
$34.2B
| $16M | 0.02% |
154,709
+66,934
| +76% | +$6.5M |
|
592
PUT
Riot Platforms
RIOT
$9.15B
| $15.9M | 0.02% |
713,800
-335,500
| -32% | -$9.99M |
|
593
CALL
Eaton
ETN
$160B
| $15.9M | 0.02% |
92,200
+6,500
| +8% | +$1.08M |
|
594
Norwegian Cruise Line
NCLH
$8.59B
| $15.9M | 0.02% |
767,478
+540,959
| +239% | +$12.9M |
|
595
PUT
Becton Dickinson
BDX
$42.5B
| $15.8M | 0.02% |
64,575
+20,705
| +47% | +$4.96M |
|
596
CALL
Healthcare Realty
HR
$7.41B
| $15.8M | 0.02% |
473,300
+456,300
| +2,684% | +$15.2M |
|
597
CALL
Novartis
NVS
$296B
| $15.8M | 0.02% |
180,500
+102,900
| +133% | +$8.54M |
|
598
CALL
TJX Companies
TJX
$170B
| $15.6M | 0.02% |
205,300
+71,900
| +54% | +$4.99M |
|
599
CALL
Blackrock
BLK
$163B
| $15.6M | 0.02% |
17,000
-2,100
| -11% | -$1.92M |
|
600
CALL
Automatic Data Processing
ADP
$96.7B
| $15.5M | 0.02% |
62,900
+8,400
| +15% | +$1.9M |
|
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.