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 | +$234M | |
| 2 | +$97.5M | |
| 3 | +$96.8M | |
| 4 |
iShares Bitcoin Trust
IBIT
|
+$80.6M |
| 5 |
Pinduoduo
PDD
|
+$54.9M |
Top Sells
| 1 | +$129M | |
| 2 | +$92.9M | |
| 3 | +$82.9M | |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$68.4M |
| 5 |
Meta Platforms (Facebook)
META
|
+$59.2M |
Sector Composition
| 1 | Technology | 34.01% |
| 2 | Consumer Discretionary | 12.8% |
| 3 | Healthcare | 10.63% |
| 4 | Financials | 7.04% |
| 5 | Communication Services | 4.24% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
401
iShares MSCI United Kingdom ETF
EWU
$3.15B
| $1.37M | 0.03% |
32,658
-2,611
|
|
||
402
Zoetis
ZTS
$54.8B
| $1.36M | 0.03% |
+9,329
|
|
||
403
Western Union
WU
$2.99B
| $1.36M | 0.03% |
170,641
+110,509
|
|
||
404
Ondas Inc
ONDS
$4.7B
| $1.36M | 0.03% |
176,437
-208,332
|
|
||
405
Coca-Cola
KO
$346B
| $1.36M | 0.03% |
20,473
-79,322
|
|
||
406
Rayonier
RYN
$6.51B
| $1.35M | 0.03% |
+53,448
|
|
||
407
HF Sinclair
DINO
$9.33B
| $1.35M | 0.03% |
25,772
+24,536
|
|
||
408
Navitas Semiconductor
NVTS
$2.19B
| $1.34M | 0.03% |
185,933
+152,463
|
|
||
409
TTM Technologies
TTMI
$11.1B
| $1.34M | 0.03% |
23,267
+19,940
|
|
||
410
VanEck Uranium + Nuclear Energy ETF
NLR
$4.85B
| $1.33M | 0.03% |
9,827
+6,111
|
|
||
411
PNC Financial Services
PNC
$90.1B
| $1.33M | 0.03% |
+6,621
|
|
||
412
Alliance Resource Partners
ARLP
$3.41B
| $1.32M | 0.03% |
52,385
-7,339
|
|
||
413
Cboe Global Markets
CBOE
$30.6B
| $1.32M | 0.03% |
5,391
+1,763
|
|
||
414
Birkenstock
BIRK
$7.53B
| $1.32M | 0.03% |
29,171
-636
|
|
||
|
FLY
415
Firefly Aerospace
FLY
$3.43B
| $1.3M | 0.03% |
+44,391
|
|
||
416
Pentair
PNR
$16.4B
| $1.3M | 0.03% |
+11,744
|
|
||
417
Range Resources
RRC
$9.26B
| $1.3M | 0.03% |
34,550
-5,453
|
|
||
418
Amgen
AMGN
$204B
| $1.3M | 0.03% |
+4,602
|
|
||
419
Kura Oncology
KURA
$753M
| $1.29M | 0.03% |
146,171
+141,962
|
|
||
420
Frontline
FRO
$8.3B
| $1.28M | 0.03% |
56,294
+20,758
|
|
||
421
FMC
FMC
$1.82B
| $1.27M | 0.03% |
37,898
-3,229
|
|
||
422
Lufax Holding
LU
$2.34B
| $1.27M | 0.03% |
312,510
+245,087
|
|
||
423
Skyworks Solutions
SWKS
$8.96B
| $1.26M | 0.03% |
16,414
-2,833
|
|
||
424
Citigroup
C
$203B
| $1.26M | 0.03% |
12,430
-110,576
|
|
||
|
CDTX
425
DELISTED
Cidara Therapeutics
CDTX
| $1.26M | 0.03% |
13,127
-54,903
|
|