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 |
Alibaba
BABA
|
+$48.9M |
| 2 |
Boeing
BA
|
+$25.8M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.2M |
| 4 |
Biogen
BIIB
|
+$15.8M |
| 5 |
FedEx
FDX
|
+$13.6M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
+$62.1M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$36.4M |
| 3 |
Industrial Select Sector SPDR Fund
XLI
|
+$17.5M |
| 4 |
Netflix
NFLX
|
+$16.3M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14.6M |
Sector Composition
| 1 | Consumer Discretionary | 16.74% |
| 2 | Technology | 16.32% |
| 3 | Healthcare | 12.17% |
| 4 | Industrials | 12.14% |
| 5 | Communication Services | 7.05% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
351
Funko
FNKO
$182M
| $580K | ﹤0.01% |
+28,235
| New | +$580K |
|
352
First Bancorp
FBP
$3.49B
| $579K | ﹤0.01% |
+58,071
| New | +$579K |
|
353
Gold Fields
GFI
$32B
| $578K | ﹤0.01% |
+117,549
| New | +$578K |
|
354
CareDx
CDNA
$716M
| $577K | ﹤0.01% |
25,530
+24,379
| +2,118% | +$551K |
|
355
ProShares Ultra Bloomberg Crude Oil
UCO
$351M
| $577K | ﹤0.01% |
+5,701
| New | +$577K |
|
|
MRO
356
DELISTED
Marathon Oil Corporation
MRO
| $576K | ﹤0.01% |
+46,976
| New | +$576K |
|
|
HOME
357
DELISTED
At Home Group Inc.
HOME
| $576K | ﹤0.01% |
59,963
+7,071
| +13% | +$67.9K |
|
358
Direxion Daily S&P Oil & Gas Exp & Prod Bear 2X Shares
DRIP
$52.2M
| $575K | ﹤0.01% |
880
+238
| +37% | +$156K |
|
359
Arista Networks
ANET
$178B
| $571K | ﹤0.01% |
+38,272
| New | +$571K |
|
360
Burlington
BURL
$17.7B
| $571K | ﹤0.01% |
2,859
+1,996
| +231% | +$399K |
|
361
Quest Diagnostics
DGX
$20.4B
| $569K | ﹤0.01% |
+5,324
| New | +$569K |
|
362
Annaly Capital Management
NLY
$14.3B
| $569K | ﹤0.01% |
16,191
+6,920
| +75% | +$243K |
|
363
Supernus Pharmaceuticals
SUPN
$2.58B
| $564K | ﹤0.01% |
20,545
+13,679
| +199% | +$376K |
|
|
PVG
364
DELISTED
PRETIUM RESOURCES INC.
PVG
| $564K | ﹤0.01% |
49,043
+28,404
| +138% | +$327K |
|
365
Advanced Drainage Systems
WMS
$10.7B
| $552K | ﹤0.01% |
17,132
+8,783
| +105% | +$283K |
|
366
OGE Energy
OGE
$8.82B
| $551K | ﹤0.01% |
+12,154
| New | +$551K |
|
367
Goodyear
GT
$2.45B
| $550K | ﹤0.01% |
+38,186
| New | +$550K |
|
368
Tencent Music
TME
$38.9B
| $550K | ﹤0.01% |
+43,075
| New | +$550K |
|
369
SPDR S&P Bank ETF
KBE
$1.55B
| $549K | ﹤0.01% |
12,735
-9,237
| -42% | -$398K |
|
370
Axsome Therapeutics
AXSM
$6.27B
| $548K | ﹤0.01% |
+27,084
| New | +$548K |
|
|
RCM
371
DELISTED
R1 RCM Inc. Common Stock
RCM
| $539K | ﹤0.01% |
60,403
+42,602
| +239% | +$380K |
|
372
iShares MSCI Germany ETF
EWG
$2.4B
| $538K | ﹤0.01% |
+20,003
| New | +$538K |
|
373
Semtech
SMTC
$5.34B
| $538K | ﹤0.01% |
11,074
+6,740
| +156% | +$327K |
|
374
American Airlines Group
AAL
$8.42B
| $535K | ﹤0.01% |
19,851
-26,638
| -57% | -$718K |
|
|
WRK
375
DELISTED
WestRock Company
WRK
| $529K | ﹤0.01% |
+14,539
| New | +$529K |
|