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
|
+$114M |
| 2 |
Citigroup
C
|
+$77M |
| 3 |
Broadcom
AVGO
|
+$53M |
| 4 |
Pinduoduo
PDD
|
+$49.7M |
| 5 |
Intel
INTC
|
+$44.5M |
Top Sells
| 1 |
Energy Select Sector SPDR Fund
XLE
|
+$92.5M |
| 2 |
Pfizer
PFE
|
+$67.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$44.9M |
| 5 |
PayPal
PYPL
|
+$44.4M |
Sector Composition
| 1 | Technology | 27.91% |
| 2 | Consumer Discretionary | 14.92% |
| 3 | Healthcare | 10.74% |
| 4 | Financials | 10.11% |
| 5 | Materials | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1376
Direxion Daily Retail Bull 3X Shares
RETL
$38.3M
| $49K | ﹤0.01% |
5,342
+4,888
| +1,077% | +$44.8K |
|
1377
Tradr TSLA Bear Daily ETF
TSLQ
$207M
| $49K | ﹤0.01% |
259
-51
| -16% | -$9.65K |
|
1378
ProShares Ultra Gold
UGL
$744M
| $49K | ﹤0.01% |
+2,568
| New | +$49K |
|
|
PRMW
1379
DELISTED
Primo Water Corporation
PRMW
| $49K | ﹤0.01% |
2,267
-361
| -14% | -$7.8K |
|
|
PWSC
1380
DELISTED
PowerSchool Holdings, Inc.
PWSC
| $49K | ﹤0.01% |
+2,207
| New | +$49K |
|
1381
Myriad Genetics
MYGN
$674M
| $48K | ﹤0.01% |
+1,985
| New | +$48K |
|
1382
Viemed Healthcare
VMD
$263M
| $48K | ﹤0.01% |
7,465
+5,759
| +338% | +$37K |
|
|
GATO
1383
DELISTED
Gatos Silver, Inc.
GATO
| $48K | ﹤0.01% |
+4,657
| New | +$48K |
|
|
IMMP
1384
Immutep
IMMP
$241M
| $47K | ﹤0.01% |
23,490
-8,581
| -27% | -$17.2K |
|
1385
iShares Global Tech ETF
IXN
$5.93B
| $47K | ﹤0.01% |
+579
| New | +$47K |
|
1386
NET Power
NPWR
$164M
| $47K | ﹤0.01% |
4,800
-3,787
| -44% | -$37.1K |
|
1387
UFP Industries
UFPI
$5.78B
| $47K | ﹤0.01% |
+422
| New | +$47K |
|
1388
Cabaletta Bio
CABA
$168M
| $46K | ﹤0.01% |
+6,204
| New | +$46K |
|
1389
Limbach Holdings
LMB
$1.23B
| $46K | ﹤0.01% |
813
-2,672
| -77% | -$151K |
|
1390
Nurix Therapeutics
NRIX
$691M
| $46K | ﹤0.01% |
2,206
-2,419
| -52% | -$50.4K |
|
1391
Prothena Corp
PRTA
$442M
| $46K | ﹤0.01% |
2,267
-4,951
| -69% | -$100K |
|
1392
ProShares Ultra S&P500
SSO
$7.39B
| $46K | ﹤0.01% |
+559
| New | +$46K |
|
|
CRESY
1393
Cresud
CRESY
$518M
| $45K | ﹤0.01% |
5,535
-2,228
| -29% | -$18.1K |
|
|
EFXT
1394
Enerflex
EFXT
$1.29B
| $45K | ﹤0.01% |
8,366
+7,827
| +1,452% | +$42.1K |
|
1395
Nkarta
NKTX
$140M
| $45K | ﹤0.01% |
+7,653
| New | +$45K |
|
1396
abrdn Physical Gold Shares ETF
SGOL
$5.8B
| $45K | ﹤0.01% |
2,046
-7,519
| -79% | -$165K |
|
1397
Telecom Argentina
TEO
$3.07B
| $45K | ﹤0.01% |
6,245
+1,738
| +39% | +$12.5K |
|
1398
Direxion Daily Dow Jones Internet Bull 3X Shares
WEBL
$156M
| $45K | ﹤0.01% |
2,536
+1,137
| +81% | +$20.2K |
|
|
CUTR
1399
DELISTED
Cutera, Inc.
CUTR
| $45K | ﹤0.01% |
+29,804
| New | +$45K |
|
|
NKLA
1400
DELISTED
Nikola Corporation Common Stock
NKLA
| $45K | ﹤0.01% |
5,616
-23,637
| -81% | -$189K |
|