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
| 1 |
NVIDIA
NVDA
|
$216M |
| 2 |
Apple
AAPL
|
$159M |
| 3 |
Broadcom
AVGO
|
$128M |
| 4 |
Booking.com
BKNG
|
$62.2M |
| 5 |
SPDR S&P 500 ETF Trust
SPY
|
$61.9M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$141M |
| 2 |
Amazon
AMZN
|
$53.1M |
| 3 |
TSMC
TSM
|
$45.7M |
| 4 |
Netflix
NFLX
|
$45.3M |
| 5 |
Pfizer
PFE
|
$38.3M |
Sector Composition
| 1 | Technology | 34.74% |
| 2 | Communication Services | 9% |
| 3 | Consumer Discretionary | 8.67% |
| 4 | Healthcare | 8.07% |
| 5 | Financials | 6.4% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
376
McCormick & Company Non-Voting
MKC
$19B
| $1.12M | ﹤0.01% |
14,727
+4,121
| +39% | +$312K |
|
377
WIX.com
WIX
$8.52B
| $1.11M | ﹤0.01% |
+7,031
| New | +$1.11M |
|
378
Alight
ALIT
$2B
| $1.11M | ﹤0.01% |
196,242
+95,576
| +95% | +$541K |
|
379
Korea Electric Power
KEP
$17.2B
| $1.11M | ﹤0.01% |
+77,994
| New | +$1.11M |
|
380
Sweetgreen
SG
$1.06B
| $1.11M | ﹤0.01% |
74,639
+69,547
| +1,366% | +$1.03M |
|
381
Clover Health Investments
CLOV
$1.41B
| $1.1M | ﹤0.01% |
395,421
+256,420
| +184% | +$715K |
|
382
Galicia Financial Group
GGAL
$6.44B
| $1.1M | ﹤0.01% |
21,896
-60
| -0.3% | -$3.02K |
|
383
Manchester United
MANU
$2.71B
| $1.1M | ﹤0.01% |
61,697
+18,954
| +44% | +$337K |
|
384
ProShares Ultra Bloomberg Natural Gas
BOIL
$129M
| $1.08M | ﹤0.01% |
23,467
+23,198
| +8,624% | +$1.07M |
|
|
MOMO
385
Hello Group
MOMO
$1.37B
| $1.07M | ﹤0.01% |
127,346
-109,212
| -46% | -$921K |
|
386
Palantir
PLTR
$363B
| $1.07M | ﹤0.01% |
+7,871
| New | +$1.07M |
|
387
Direxion Daily S&P 500 Bear 3x Shares
SPXS
$443M
| $1.07M | ﹤0.01% |
227,958
-38,569
| -14% | -$181K |
|
388
Alcoa
AA
$8.24B
| $1.07M | ﹤0.01% |
36,208
+15,858
| +78% | +$468K |
|
389
Waste Management
WM
$88.6B
| $1.07M | ﹤0.01% |
+4,659
| New | +$1.07M |
|
390
Praxis Precision Medicines
PRAX
$986M
| $1.07M | ﹤0.01% |
25,328
+22,030
| +668% | +$926K |
|
391
Telephone and Data Systems
TDS
$4.54B
| $1.06M | ﹤0.01% |
29,849
+24,838
| +496% | +$884K |
|
392
Allstate
ALL
$53.1B
| $1.06M | ﹤0.01% |
+5,269
| New | +$1.06M |
|
393
Amcor
AMCR
$19.1B
| $1.06M | ﹤0.01% |
+115,181
| New | +$1.06M |
|
394
XP
XP
$9.96B
| $1.04M | ﹤0.01% |
+51,680
| New | +$1.04M |
|
|
NNDM
395
Nano Dimension
NNDM
$293M
| $1.04M | ﹤0.01% |
641,307
-140,271
| -18% | -$227K |
|
396
ProShares Ultra Semiconductors
USD
$1.33B
| $1.04M | ﹤0.01% |
14,037
+10,769
| +330% | +$796K |
|
397
Howard Hughes
HHH
$4.69B
| $1.03M | ﹤0.01% |
15,319
+3,745
| +32% | +$253K |
|
|
ITOS
398
DELISTED
iTeos Therapeutics
ITOS
| $1.03M | ﹤0.01% |
+103,212
| New | +$1.03M |
|
399
Kosmos Energy
KOS
$784M
| $1.03M | ﹤0.01% |
598,648
+186,967
| +45% | +$321K |
|
400
Halliburton
HAL
$18.8B
| $1.02M | ﹤0.01% |
50,227
-38,252
| -43% | -$779K |
|