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 |
Goldman Sachs
GS
|
+$38.4M |
| 2 |
Micron Technology
MU
|
+$23.7M |
| 3 |
NVIDIA
NVDA
|
+$23.6M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.7M |
| 5 |
Wells Fargo
WFC
|
+$20.4M |
Top Sells
| 1 |
Citigroup
C
|
+$21.6M |
| 2 |
Apple
AAPL
|
+$17.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$13.3M |
| 4 |
Eli Lilly
LLY
|
+$9.69M |
| 5 |
Mastercard
MA
|
+$8.27M |
Sector Composition
| 1 | Technology | 14.2% |
| 2 | Communication Services | 13.46% |
| 3 | Consumer Discretionary | 12.76% |
| 4 | Healthcare | 12.43% |
| 5 | Financials | 10.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
301
Huntington Ingalls Industries
HII
$10.8B
| $835K | 0.04% |
4,173
-2,861
| -41% | -$572K |
|
|
SYNH
302
DELISTED
Syneos Health, Inc. Class A Common Stock
SYNH
| $834K | 0.04% |
+18,193
| New | +$834K |
|
303
NOV
NOV
$4.82B
| $830K | 0.04% |
+20,705
| New | +$830K |
|
304
T Rowe Price
TROW
$23.2B
| $821K | 0.04% |
+12,059
| New | +$821K |
|
|
SLCA
305
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $811K | 0.04% |
+16,911
| New | +$811K |
|
|
JO
306
DELISTED
iPath Bloomberg Coffee Subindex Total Return ETN due June 24, 2038
JO
| $811K | 0.04% |
41,781
+33,563
| +408% | +$651K |
|
307
Capri Holdings
CPRI
$2.56B
| $803K | 0.03% |
21,096
-24,933
| -54% | -$949K |
|
308
SM Energy
SM
$3.15B
| $803K | 0.03% |
33,457
+23,088
| +223% | +$554K |
|
309
iShares Russell Mid-Cap ETF
IWR
$44.9B
| $801K | 0.03% |
+17,120
| New | +$801K |
|
|
XYZ
310
Block Inc
XYZ
$47.2B
| $798K | 0.03% |
46,205
+34,139
| +283% | +$590K |
|
311
HP
HPQ
$26.4B
| $796K | 0.03% |
+44,554
| New | +$796K |
|
312
Johnson & Johnson
JNJ
$419B
| $796K | 0.03% |
6,399
-557
| -8% | -$69.3K |
|
313
Vanguard FTSE Emerging Markets ETF
VWO
$102B
| $795K | 0.03% |
20,017
+6,791
| +51% | +$270K |
|
314
Cigna
CI
$78.4B
| $791K | 0.03% |
+5,400
| New | +$791K |
|
315
Ecolab
ECL
$75.1B
| $790K | 0.03% |
6,306
+2,523
| +67% | +$316K |
|
316
Ultra Clean Holdings
UCTT
$1.28B
| $782K | 0.03% |
46,368
+45,031
| +3,368% | +$759K |
|
317
Zoetis
ZTS
$65.2B
| $782K | 0.03% |
14,668
-13,173
| -47% | -$702K |
|
318
SPDR S&P Bank ETF
KBE
$1.56B
| $775K | 0.03% |
+18,032
| New | +$775K |
|
319
Wingstop
WING
$7.14B
| $775K | 0.03% |
+27,438
| New | +$775K |
|
|
TTM
320
DELISTED
Tata Motors Limited
TTM
| $773K | 0.03% |
+21,705
| New | +$773K |
|
321
Regency Centers
REG
$12.8B
| $772K | 0.03% |
+11,641
| New | +$772K |
|
|
OPB
322
DELISTED
Opus Bank Common Stock
OPB
| $767K | 0.03% |
38,071
+36,950
| +3,296% | +$744K |
|
323
Direxion Daily Financial Bear 3x Shares
FAZ
$107M
| $766K | 0.03% |
+991
| New | +$766K |
|
324
W.R. Berkley
WRB
$27.7B
| $766K | 0.03% |
36,629
+27,250
| +291% | +$570K |
|
|
FL
325
DELISTED
Foot Locker
FL
| $757K | 0.03% |
+10,126
| New | +$757K |
|