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 | +$237M | |
| 2 | +$103M | |
| 3 | +$93.9M | |
| 4 |
iShares Bitcoin Trust
IBIT
|
+$80.5M |
| 5 |
Pinduoduo
PDD
|
+$61.3M |
Top Sells
| 1 | +$129M | |
| 2 | +$108M | |
| 3 | +$89.1M | |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$79.3M |
| 5 |
Micron Technology
MU
|
+$64.3M |
Sector Composition
| 1 | Technology | 34.04% |
| 2 | Consumer Discretionary | 13.08% |
| 3 | Healthcare | 10.63% |
| 4 | Financials | 7.02% |
| 5 | Industrials | 3.96% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
276
Ouster
OUST
$1.36B
| $2.18M | ﹤0.01% |
80,450
+78,433
|
|
||
277
Antero Resources
AR
$10.7B
| $2.17M | ﹤0.01% |
64,616
+31,190
|
|
||
278
Dell
DELL
$91B
| $2.17M | ﹤0.01% |
15,296
-49,178
|
|
||
279
IQVIA
IQV
$38.6B
| $2.14M | ﹤0.01% |
+11,274
|
|
||
280
Blackstone Mortgage Trust
BXMT
$3.11B
| $2.14M | ﹤0.01% |
116,250
+22,172
|
|
||
|
JBS
281
JBS N.V.
JBS
$14.7B
| $2.13M | ﹤0.01% |
142,980
+127,224
|
|
||
282
Invesco CurrencyShares Euro Currency Trust
FXE
$527M
| $2.12M | ﹤0.01% |
19,592
+14,628
|
|
||
283
GitLab
GTLB
$7.38B
| $2.12M | ﹤0.01% |
47,065
-26,630
|
|
||
|
GTM
284
ZoomInfo Technologies
GTM
$3.23B
| $2.12M | ﹤0.01% |
194,080
+63,087
|
|
||
285
Idexx Laboratories
IDXX
$56.5B
| $2.11M | ﹤0.01% |
+3,310
|
|
||
286
Galicia Financial Group
GGAL
$8.57B
| $2.11M | ﹤0.01% |
76,518
+54,622
|
|
||
287
-1x Short VIX Futures ETF
SVIX
$160M
| $2.07M | ﹤0.01% |
96,934
+76,356
|
|
||
288
NCR Voyix
VYX
$1.52B
| $2.07M | ﹤0.01% |
164,731
+3,343
|
|
||
|
ROBN
289
T-Rex 2X Long HOOD Daily Target ETF
ROBN
$178M
| $2.06M | ﹤0.01% |
19,084
-11,247
|
|
||
290
iShares US Technology ETF
IYW
$22.3B
| $2.05M | ﹤0.01% |
+10,488
|
|
||
291
Conagra Brands
CAG
$8.41B
| $2.04M | ﹤0.01% |
111,704
+19,892
|
|
||
292
AdvisorShares Pure US Cannabis ETF
MSOS
$742M
| $2.02M | ﹤0.01% |
421,735
+144,404
|
|
||
293
Comerica
CMA
$10.2B
| $2.02M | ﹤0.01% |
29,480
-25,587
|
|
||
294
Aurora
AUR
$8.13B
| $2.02M | ﹤0.01% |
374,316
+81,445
|
|
||
295
FuboTV Inc
FUBO
$1.28B
| $2.01M | ﹤0.01% |
484,101
-32,858
|
|
||
296
BioNTech
BNTX
$25.5B
| $2.01M | ﹤0.01% |
20,361
+12,755
|
|
||
297
Wendy's
WEN
$1.68B
| $2.01M | ﹤0.01% |
+219,138
|
|
||
298
Whirlpool
WHR
$3.71B
| $2M | ﹤0.01% |
25,401
+5,930
|
|
||
299
WEC Energy
WEC
$36.5B
| $2M | ﹤0.01% |
17,413
+16,866
|
|
||
|
USAR
300
USA Rare Earth Inc
USAR
$2.03B
| $1.98M | ﹤0.01% |
114,913
+85,231
|
|