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 |
Goldman Sachs
GS
|
+$38.4M |
| 2 |
Micron Technology
MU
|
+$23.7M |
| 3 |
NVIDIA
NVDA
|
+$23.6M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.7M |
| 5 |
Wells Fargo
WFC
|
+$20.4M |
Top Sells
| 1 |
Citigroup
C
|
+$21.6M |
| 2 |
Apple
AAPL
|
+$17.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$13.3M |
| 4 |
Eli Lilly
LLY
|
+$9.69M |
| 5 |
Mastercard
MA
|
+$8.27M |
Sector Composition
| 1 | Technology | 14.2% |
| 2 | Communication Services | 13.46% |
| 3 | Consumer Discretionary | 12.76% |
| 4 | Healthcare | 12.43% |
| 5 | Financials | 10.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
451
Chord Energy
CHRD
$5.97B
| $488K | 0.02% |
+34,281
| New | +$488K |
|
|
TOUR
452
Tuniu
TOUR
$109M
| $488K | 0.02% |
55,761
+6,387
| +13% | +$55.9K |
|
453
WEX
WEX
$5.77B
| $487K | 0.02% |
+4,706
| New | +$487K |
|
|
NE
454
DELISTED
Noble Corporation
NE
| $486K | 0.02% |
78,671
+40,936
| +108% | +$253K |
|
455
Safety Insurance
SAFT
$1.08B
| $485K | 0.02% |
6,930
-1,606
| -19% | -$112K |
|
456
Karyopharm Therapeutics
KPTI
$49.7M
| $484K | 0.02% |
+2,516
| New | +$484K |
|
|
AIRM
457
DELISTED
Air Methods Corp
AIRM
| $483K | 0.02% |
11,238
+7,998
| +247% | +$344K |
|
458
Nexstar Media Group
NXST
$6.26B
| $479K | 0.02% |
6,835
-4,796
| -41% | -$336K |
|
|
FBC
459
DELISTED
Flagstar Bancorp, Inc. New
FBC
| $478K | 0.02% |
16,959
+16,058
| +1,782% | +$453K |
|
460
Direxion Daily S&P 500 Bull 3x Shares
SPXL
$5.59B
| $476K | 0.02% |
15,080
-55,676
| -79% | -$1.76M |
|
461
Ubiquiti
UI
$37.9B
| $475K | 0.02% |
+9,460
| New | +$475K |
|
|
NSM
462
DELISTED
Nationstar Mortgage Holdings
NSM
| $474K | 0.02% |
+30,135
| New | +$474K |
|
463
Encore Capital Group
ECPG
$1.06B
| $473K | 0.02% |
15,363
+14,130
| +1,146% | +$435K |
|
464
Jacobs Solutions
J
$17.9B
| $471K | 0.02% |
10,309
+9,406
| +1,042% | +$430K |
|
|
VGR
465
DELISTED
Vector Group Ltd.
VGR
| $470K | 0.02% |
36,954
+28,081
| +316% | +$357K |
|
466
Wolfspeed
WOLF
$385M
| $469K | 0.02% |
+17,577
| New | +$469K |
|
467
Invesco DB US Dollar Index Bullish Fund
UUP
$160M
| $468K | 0.02% |
18,071
-1,116
| -6% | -$28.9K |
|
|
ZYNE
468
DELISTED
Zynerba Pharmaceuticals, Inc
ZYNE
| $467K | 0.02% |
23,260
+17,622
| +313% | +$354K |
|
|
NVRO
469
DELISTED
NEVRO CORP.
NVRO
| $463K | 0.02% |
4,945
+3,422
| +225% | +$320K |
|
|
MMP
470
DELISTED
Magellan Midstream Partners, L.P.
MMP
| $462K | 0.02% |
+6,011
| New | +$462K |
|
|
ACAT
471
DELISTED
Arctic Cat Inc
ACAT
| $461K | 0.02% |
+24,969
| New | +$461K |
|
472
Tesla
TSLA
$1.34T
| $459K | 0.02% |
24,750
+15,750
| +175% | +$292K |
|
473
iShares Core US Aggregate Bond ETF
AGG
$132B
| $457K | 0.02% |
+4,216
| New | +$457K |
|
474
OSI Systems
OSIS
$4.08B
| $455K | 0.02% |
+6,234
| New | +$455K |
|
475
Piper Sandler
PIPR
$6.53B
| $455K | 0.02% |
+7,137
| New | +$455K |
|