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 | |
|---|---|---|---|---|---|---|
576
Cenovus Energy
CVE
$29.3B
| $561K | ﹤0.01% |
41,322
-163,387
| -80% | -$2.22M |
|
577
Direxion Daily Homebuilders & Supplies Bull 3X Shares
NAIL
$615M
| $560K | ﹤0.01% |
10,584
-6,793
| -39% | -$359K |
|
578
Deutsche Bank
DB
$68.8B
| $559K | ﹤0.01% |
+19,114
| New | +$559K |
|
|
GLXY
579
Galaxy Digital Inc. Class A Common Stock
GLXY
$4.58B
| $557K | ﹤0.01% |
+25,445
| New | +$557K |
|
580
Trip.com Group
TCOM
$47.3B
| $555K | ﹤0.01% |
9,477
-34,026
| -78% | -$1.99M |
|
581
TransAlta
TAC
$3.66B
| $553K | ﹤0.01% |
51,321
-12,784
| -20% | -$138K |
|
582
CF Industries
CF
$13.7B
| $552K | ﹤0.01% |
+6,002
| New | +$552K |
|
583
Eversource Energy
ES
$23.7B
| $550K | ﹤0.01% |
8,656
+8,133
| +1,555% | +$517K |
|
|
MREO
584
Mereo BioPharma
MREO
$290M
| $545K | ﹤0.01% |
201,141
+197,024
| +4,786% | +$534K |
|
585
Opendoor
OPEN
$4.5B
| $545K | ﹤0.01% |
1,023,821
+686,119
| +203% | +$365K |
|
586
MGIC Investment
MTG
$6.51B
| $541K | ﹤0.01% |
+19,450
| New | +$541K |
|
587
Cars.com
CARS
$823M
| $540K | ﹤0.01% |
45,576
+28,511
| +167% | +$338K |
|
588
Invesco CurrencyShares Euro Currency Trust
FXE
$529M
| $540K | ﹤0.01% |
4,964
-5,465
| -52% | -$595K |
|
|
BRSL
589
Brightstar Lottery PLC
BRSL
$3.18B
| $540K | ﹤0.01% |
34,204
-10,894
| -24% | -$172K |
|
590
Taylor Morrison
TMHC
$6.92B
| $538K | ﹤0.01% |
+8,765
| New | +$538K |
|
591
AutoNation
AN
$8.48B
| $536K | ﹤0.01% |
+2,700
| New | +$536K |
|
|
TBCH
592
Turtle Beach Corporation Common Stock
TBCH
$298M
| $536K | ﹤0.01% |
38,793
-3,975
| -9% | -$54.9K |
|
593
Green Dot
GDOT
$808M
| $532K | ﹤0.01% |
49,405
+41,032
| +490% | +$442K |
|
|
BULL
594
Webull Corporation Class A Ordinary Shares
BULL
$6.56B
| $532K | ﹤0.01% |
+44,488
| New | +$532K |
|
595
RLX Technology
RLX
$3.33B
| $526K | ﹤0.01% |
238,373
+129,692
| +119% | +$286K |
|
596
Invesco S&P 500 Low Volatility ETF
SPLV
$7.88B
| $523K | ﹤0.01% |
7,184
-15,906
| -69% | -$1.16M |
|
597
Protagonist Therapeutics
PTGX
$3.63B
| $522K | ﹤0.01% |
9,452
-16,482
| -64% | -$910K |
|
598
Groupon
GRPN
$930M
| $519K | ﹤0.01% |
15,529
-69,459
| -82% | -$2.32M |
|
599
Huntington Ingalls Industries
HII
$10.5B
| $519K | ﹤0.01% |
+2,153
| New | +$519K |
|
600
Oportun Financial
OPRT
$293M
| $519K | ﹤0.01% |
72,558
+62,254
| +604% | +$445K |
|