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 |
Microsoft
MSFT
|
+$101M |
| 2 |
NVIDIA
NVDA
|
+$66M |
| 3 |
Citigroup
C
|
+$51.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$42.7M |
| 5 |
SPDR Gold Trust
GLD
|
+$39.4M |
Top Sells
| 1 |
Apple
AAPL
|
+$411M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$64M |
| 3 |
Meta Platforms (Facebook)
META
|
+$39.8M |
| 4 |
iShares Core S&P 500 ETF
IVV
|
+$34.3M |
| 5 |
PayPal
PYPL
|
+$32.9M |
Sector Composition
| 1 | Technology | 17.4% |
| 2 | Financials | 12.04% |
| 3 | Consumer Discretionary | 10.17% |
| 4 | Healthcare | 8.63% |
| 5 | Industrials | 6.03% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
SNP
501
DELISTED
CHINA PETROLEUM & CHEMICAL CORPORATION ADS (REP 100 ORDINARY H SHARES)
SNP
| $647K | ﹤0.01% |
15,080
-17,567
| -54% | -$754K |
|
502
SolarEdge
SEDG
$1.75B
| $646K | ﹤0.01% |
2,795
+430
| +18% | +$99.4K |
|
|
CAMP
503
DELISTED
CalAmp Corp.
CAMP
| $645K | ﹤0.01% |
7,306
+7,150
| +4,583% | +$631K |
|
504
ProShares Ultra Euro
ULE
$7.21M
| $636K | ﹤0.01% |
66,523
-13,849
| -17% | -$132K |
|
505
KraneShares Global Carbon Strategy ETF
KRBN
$167M
| $634K | ﹤0.01% |
17,066
+9,889
| +138% | +$367K |
|
506
Public Storage
PSA
$50.7B
| $633K | ﹤0.01% |
2,162
+1,343
| +164% | +$393K |
|
507
BILL Holdings
BILL
$5.38B
| $631K | ﹤0.01% |
4,771
-12,807
| -73% | -$1.69M |
|
|
LSXMA
508
DELISTED
Liberty Media Corporation Series A Liberty SiriusXM Common Stock
LSXMA
| $630K | ﹤0.01% |
22,548
+19,397
| +616% | +$542K |
|
509
Bunge Global
BG
$16.5B
| $627K | ﹤0.01% |
7,604
-4,918
| -39% | -$406K |
|
510
Citizens Financial Group
CFG
$22.3B
| $626K | ﹤0.01% |
+18,225
| New | +$626K |
|
511
Community Health Systems
CYH
$409M
| $626K | ﹤0.01% |
291,530
+246,518
| +548% | +$529K |
|
|
IAA
512
DELISTED
IAA, Inc. Common Stock
IAA
| $626K | ﹤0.01% |
19,676
-22,685
| -54% | -$722K |
|
513
Sensus Healthcare
SRTS
$52.6M
| $623K | ﹤0.01% |
49,775
+23,015
| +86% | +$288K |
|
514
Magna International
MGA
$12.9B
| $613K | ﹤0.01% |
+12,944
| New | +$613K |
|
515
ICICI Bank
IBN
$113B
| $612K | ﹤0.01% |
29,216
-38,760
| -57% | -$812K |
|
516
Alta Equipment Group
ALTG
$246M
| $609K | ﹤0.01% |
55,332
+3,172
| +6% | +$34.9K |
|
517
Sylvamo
SLVM
$1.75B
| $609K | ﹤0.01% |
17,979
+15,691
| +686% | +$531K |
|
518
AbCellera Biologics
ABCL
$1.28B
| $601K | ﹤0.01% |
60,786
+36,004
| +145% | +$356K |
|
519
Direxion Daily FTSE China Bull 3X Shares
YINN
$1.13B
| $601K | ﹤0.01% |
14,790
-19,464
| -57% | -$791K |
|
520
SPDR S&P Bank ETF
KBE
$1.55B
| $596K | ﹤0.01% |
+13,459
| New | +$596K |
|
521
MarketAxess Holdings
MKTX
$6.9B
| $596K | ﹤0.01% |
+2,681
| New | +$596K |
|
522
Eve Holding
EVEX
$1.11B
| $594K | ﹤0.01% |
+64,293
| New | +$594K |
|
523
Evolent Health
EVH
$1.07B
| $593K | ﹤0.01% |
16,507
+14,432
| +696% | +$518K |
|
524
Pinnacle West Capital
PNW
$10.5B
| $593K | ﹤0.01% |
+9,199
| New | +$593K |
|
|
ADAM
525
Adamas Trust, Inc. Common Stock
ADAM
$653M
| $591K | ﹤0.01% |
63,174
+14,608
| +30% | +$137K |
|