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 |
LNKD
LinkedIn Corporation
LNKD
|
$29.3M |
| 2 |
SPDR Gold Trust
GLD
|
$18.1M |
| 3 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
$14.9M |
| 4 |
Biogen
BIIB
|
$13.7M |
| 5 |
Visa
V
|
$13.3M |
Top Sells
| 1 |
Broadcom
AVGO
|
$37.4M |
| 2 |
Alphabet (Google) Class C
GOOG
|
$20.1M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
$15.8M |
| 4 |
Citigroup
C
|
$13.9M |
| 5 |
SPDR S&P MidCap 400 ETF Trust
MDY
|
$12.9M |
Sector Composition
| 1 | Communication Services | 12.51% |
| 2 | Healthcare | 12.38% |
| 3 | Technology | 12.22% |
| 4 | Consumer Discretionary | 8.59% |
| 5 | Financials | 8.53% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
SPA
201
DELISTED
Sparton
SPA
| $810K | 0.05% |
+37,213
| New | +$810K |
|
202
Quad
QUAD
$334M
| $803K | 0.05% |
34,484
-18,693
| -35% | -$435K |
|
203
Ovintiv
OVV
$10.6B
| $792K | 0.05% |
20,350
+16,281
| +400% | +$634K |
|
|
SRCL
204
DELISTED
Stericycle Inc
SRCL
| $784K | 0.05% |
7,533
+5,292
| +236% | +$551K |
|
205
Acadia Pharmaceuticals
ACAD
$4.26B
| $781K | 0.05% |
24,090
+21,494
| +828% | +$697K |
|
206
abrdn Physical Gold Shares ETF
SGOL
$5.72B
| $780K | 0.05% |
60,520
-24,540
| -29% | -$316K |
|
207
Clorox
CLX
$15.5B
| $776K | 0.05% |
+5,612
| New | +$776K |
|
208
iShares MSCI Europe Financials ETF
EUFN
$4.36B
| $775K | 0.05% |
+49,431
| New | +$775K |
|
209
Kohl's
KSS
$1.86B
| $772K | 0.05% |
+20,384
| New | +$772K |
|
210
ProShares Ultra Energy
DIG
$69.5M
| $766K | 0.05% |
16,399
-667
| -4% | -$31.2K |
|
211
FirstEnergy
FE
$25.1B
| $759K | 0.05% |
21,763
+2,397
| +12% | +$83.6K |
|
212
iShares MSCI USA Min Vol Factor ETF
USMV
$23.4B
| $758K | 0.05% |
16,417
+6,786
| +70% | +$313K |
|
213
Consumer Discretionary Select Sector SPDR Fund
XLY
$23.6B
| $756K | 0.05% |
+9,692
| New | +$756K |
|
214
Coterra Energy
CTRA
$18.3B
| $754K | 0.05% |
+29,313
| New | +$754K |
|
|
SGI
215
Somnigroup International Inc.
SGI
$18.3B
| $749K | 0.05% |
54,204
+8,448
| +18% | +$117K |
|
216
Freeport-McMoran
FCX
$66.5B
| $740K | 0.05% |
66,437
+56,896
| +596% | +$634K |
|
217
iShares TIPS Bond ETF
TIP
$13.6B
| $740K | 0.05% |
6,343
+6,295
| +13,115% | +$734K |
|
218
ProShares Trust UltraShort MSCI EAFE
EFU
$929K
| $739K | 0.05% |
9,202
+8,780
| +2,081% | +$705K |
|
219
LendingClub
LC
$1.9B
| $739K | 0.05% |
+34,380
| New | +$739K |
|
220
Synchrony
SYF
$28.1B
| $739K | 0.05% |
29,251
+24,958
| +581% | +$631K |
|
221
Vanguard FTSE Europe ETF
VGK
$26.9B
| $738K | 0.05% |
+15,824
| New | +$738K |
|
|
KANG
222
DELISTED
iKang Healthcare Group, Inc.
KANG
| $732K | 0.05% |
39,935
+12,025
| +43% | +$220K |
|
223
Liberty Global Class C
LBTYK
$4.12B
| $718K | 0.05% |
25,064
-3,392
| -12% | -$97.2K |
|
224
Middleby
MIDD
$7.32B
| $710K | 0.05% |
6,168
+4,305
| +231% | +$496K |
|
|
CBI
225
DELISTED
Chicago Bridge & Iron Nv
CBI
| $709K | 0.05% |
20,482
-4,050
| -17% | -$140K |
|