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 | |
|---|---|---|---|---|---|---|
501
CALL
Sherwin-Williams
SHW
$78.9B
| $20.4M | 0.02% |
57,900
+100
| +0.2% | +$32.3K |
|
502
Vale
VALE
$63.2B
| $20.3M | 0.02% |
+1,451,403
| New | +$19.3M |
|
503
CALL
SLB Ltd
SLB
$71.3B
| $20.3M | 0.02% |
678,500
+124,700
| +23% | +$3.93M |
|
504
CALL
BlackBerry
BB
$5.25B
| $20.3M | 0.02% |
2,167,000
+307,500
| +17% | +$3.08M |
|
505
CALL
Okta
OKTA
$23.8B
| $20.2M | 0.02% |
90,200
+34,400
| +62% | +$8.19M |
|
506
PUT
ClearShares Piton Intermediate Fixed Income ETF
PIFI
$97.5M
| $20.2M | 0.02% |
956,900
+609,600
| +176% | +$60.1M |
|
507
Palantir
PLTR
$299B
| $20M | 0.02% |
1,100,603
-202,849
| -16% | -$4.48M |
|
508
PUT
Ball Corp
BALL
$16.6B
| $19.9M | 0.02% |
207,100
+126,900
| +158% | +$11.7M |
|
509
CALL
Crown Castle
CCI
$33.8B
| $19.8M | 0.02% |
94,900
+31,300
| +49% | +$5.78M |
|
510
PUT
MGM Resorts International
MGM
$11.6B
| $19.8M | 0.02% |
440,800
+186,800
| +74% | +$8.39M |
|
511
Estee Lauder
EL
$29.9B
| $19.8M | 0.02% |
53,361
+50,124
| +1,548% | +$17M |
|
512
CALL
ON Semiconductor
ON
$35.9B
| $19.7M | 0.02% |
290,500
+67,800
| +30% | +$3.84M |
|
513
CALL
Deere & Co
DE
$164B
| $19.7M | 0.02% |
57,500
-25,400
| -31% | -$8.84M |
|
514
PUT
Generac Holdings
GNRC
$12.6B
| $19.7M | 0.02% |
55,900
+21,800
| +64% | +$9.04M |
|
515
CALL
Coupang
CPNG
$28.1B
| $19.6M | 0.02% |
668,000
+451,400
| +208% | +$12.7M |
|
516
Wells Fargo
WFC
$262B
| $19.5M | 0.02% |
+405,674
| New | +$20M |
|
517
CALL
Marathon Petroleum
MPC
$92.2B
| $19.4M | 0.02% |
303,400
+86,800
| +40% | +$5.58M |
|
|
B
518
Barrick Mining
B
$62.8B
| $19.4M | 0.02% |
1,018,466
+672,483
| +194% | +$12.8M |
|
519
Accenture
ACN
$85.7B
| $19.3M | 0.02% |
+46,648
| New | +$17M |
|
520
CALL
Nucor
NUE
$53.7B
| $19.3M | 0.02% |
169,300
-272,100
| -62% | -$29.8M |
|
521
PUT
Albemarle
ALB
$13.9B
| $19.3M | 0.02% |
82,500
+42,900
| +108% | +$10.6M |
|
522
Freeport-McMoran
FCX
$93.4B
| $19.3M | 0.02% |
461,846
-62,651
| -12% | -$2.38M |
|
523
CALL
PNC Financial Services
PNC
$101B
| $19.2M | 0.02% |
96,000
+36,600
| +62% | +$7.45M |
|
524
CALL
Apollo Global Management
APO
$68.6B
| $19M | 0.02% |
262,900
+139,700
| +113% | +$10.1M |
|
525
CALL
Clorox
CLX
$11.6B
| $19M | 0.02% |
109,000
-40,100
| -27% | -$6.68M |
|
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.