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 |
Boeing
BA
|
+$49.5M |
| 2 |
Pinduoduo
PDD
|
+$45.3M |
| 3 |
Microsoft
MSFT
|
+$42.5M |
| 4 |
Apple
AAPL
|
+$33.3M |
| 5 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$25.4M |
Top Sells
| 1 |
Broadcom
AVGO
|
+$95.4M |
| 2 |
Citigroup
C
|
+$57.9M |
| 3 |
Pfizer
PFE
|
+$55.9M |
| 4 |
TSMC
TSM
|
+$40.4M |
| 5 |
Starbucks
SBUX
|
+$40.4M |
Sector Composition
| 1 | Technology | 23.11% |
| 2 | Consumer Discretionary | 16.53% |
| 3 | Healthcare | 8.58% |
| 4 | Industrials | 7.58% |
| 5 | Financials | 7.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1401
Amer Sports
AS
$20.2B
| $33K | ﹤0.01% |
2,130
-842
| -28% | -$13K |
|
|
AHT
1402
Ashford Hospitality Trust
AHT
$38.1M
| $32K | ﹤0.01% |
4,395
+507
| +13% | +$3.69K |
|
1403
Arcturus Therapeutics
ARCT
$470M
| $32K | ﹤0.01% |
+1,381
| New | +$32K |
|
|
AUTL
1404
Autolus Therapeutics
AUTL
$367M
| $32K | ﹤0.01% |
8,816
+8,800
| +55,000% | +$31.9K |
|
1405
Donaldson
DCI
$9.42B
| $32K | ﹤0.01% |
435
-624
| -59% | -$45.9K |
|
1406
Direxion Daily Emerging Markets Bull 3X Shares
EDC
$95.8M
| $32K | ﹤0.01% |
+857
| New | +$32K |
|
1407
iShares US Healthcare ETF
IYH
$2.76B
| $32K | ﹤0.01% |
500
+300
| +150% | +$19.2K |
|
1408
VanEck Merk Gold Trust
OUNZ
$1.97B
| $32K | ﹤0.01% |
+1,296
| New | +$32K |
|
1409
Pliant Therapeutics
PLRX
$97.6M
| $32K | ﹤0.01% |
2,858
+1,165
| +69% | +$13K |
|
1410
RLX Technology
RLX
$3.18B
| $32K | ﹤0.01% |
17,691
+13,055
| +282% | +$23.6K |
|
1411
Stoke Therapeutics
STOK
$1.29B
| $32K | ﹤0.01% |
2,638
-2,089
| -44% | -$25.3K |
|
1412
Trevi Therapeutics
TRVI
$1B
| $32K | ﹤0.01% |
+9,641
| New | +$32K |
|
1413
Vir Biotechnology
VIR
$695M
| $32K | ﹤0.01% |
4,273
-13,680
| -76% | -$102K |
|
|
CUTR
1414
DELISTED
Cutera, Inc.
CUTR
| $32K | ﹤0.01% |
40,838
+11,034
| +37% | +$8.65K |
|
1415
Agilon Health
AGL
$443M
| $31K | ﹤0.01% |
+8,105
| New | +$31K |
|
1416
ALX Oncology
ALXO
$56.8M
| $31K | ﹤0.01% |
+17,146
| New | +$31K |
|
1417
American Woodmark
AMWD
$995M
| $31K | ﹤0.01% |
+342
| New | +$31K |
|
1418
American Well
AMWL
$107M
| $31K | ﹤0.01% |
3,312
+2,537
| +327% | +$23.7K |
|
1419
Beam Global
BEEM
$42.2M
| $31K | ﹤0.01% |
+6,502
| New | +$31K |
|
1420
Roundhill Generative AI & Technology ETF
CHAT
$591M
| $31K | ﹤0.01% |
854
-1,556
| -65% | -$56.5K |
|
1421
ESSA Pharma
EPIX
$9.6M
| $31K | ﹤0.01% |
+5,162
| New | +$31K |
|
1422
F&G Annuities & Life
FG
$4.65B
| $31K | ﹤0.01% |
+697
| New | +$31K |
|
|
INN
1423
Summit Hotel Properties
INN
$623M
| $31K | ﹤0.01% |
4,580
-4,230
| -48% | -$28.6K |
|
|
OGI
1424
Organigram Holdings
OGI
$222M
| $31K | ﹤0.01% |
17,617
+3,842
| +28% | +$6.76K |
|
1425
ONE Gas
OGS
$4.55B
| $31K | ﹤0.01% |
421
-14
| -3% | -$1.03K |
|