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 |
Alibaba
BABA
|
+$48.9M |
| 2 |
Boeing
BA
|
+$25.8M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.2M |
| 4 |
Biogen
BIIB
|
+$15.8M |
| 5 |
FedEx
FDX
|
+$13.6M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
+$62.1M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$36.4M |
| 3 |
Industrial Select Sector SPDR Fund
XLI
|
+$17.5M |
| 4 |
Netflix
NFLX
|
+$16.3M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14.6M |
Sector Composition
| 1 | Consumer Discretionary | 16.74% |
| 2 | Technology | 16.32% |
| 3 | Healthcare | 12.17% |
| 4 | Industrials | 12.14% |
| 5 | Communication Services | 7.05% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1376
Malibu Boats
MBUU
$629M
| $16K | ﹤0.01% |
533
-439
| -45% | -$13.2K |
|
1377
Mercer International
MERC
$206M
| $16K | ﹤0.01% |
+1,335
| New | +$16K |
|
1378
Mitsubishi UFJ Financial
MUFG
$177B
| $16K | ﹤0.01% |
+3,276
| New | +$16K |
|
1379
Quanex
NX
$661M
| $16K | ﹤0.01% |
891
+817
| +1,104% | +$14.7K |
|
|
TBI
1380
Trueblue
TBI
$179M
| $16K | ﹤0.01% |
763
-670
| -47% | -$14.1K |
|
1381
Real Estate Select Sector SPDR Fund
XLRE
$7.81B
| $16K | ﹤0.01% |
429
-1,083
| -72% | -$40.4K |
|
|
FPRX
1382
DELISTED
Five Prime Therapeutics, Inc.
FPRX
| $16K | ﹤0.01% |
4,331
+3,723
| +612% | +$13.8K |
|
|
ONDK
1383
DELISTED
On Deck Capital, Inc.
ONDK
| $16K | ﹤0.01% |
4,906
-3,982
| -45% | -$13K |
|
1384
AAR Corp
AIR
$2.67B
| $15K | ﹤0.01% |
+379
| New | +$15K |
|
1385
Andersons Inc
ANDE
$1.38B
| $15K | ﹤0.01% |
704
+699
| +13,980% | +$14.9K |
|
1386
Altice USA
ATUS
$1.12B
| $15K | ﹤0.01% |
551
-8,186
| -94% | -$223K |
|
1387
CrossAmerica Partners
CAPL
$774M
| $15K | ﹤0.01% |
927
-590
| -39% | -$9.55K |
|
1388
Comtech Telecommunications
CMTL
$69.1M
| $15K | ﹤0.01% |
+484
| New | +$15K |
|
1389
Crane NXT
CXT
$3.46B
| $15K | ﹤0.01% |
570
-109
| -16% | -$2.87K |
|
1390
DNOW Inc
DNOW
$1.6B
| $15K | ﹤0.01% |
1,314
-131
| -9% | -$1.5K |
|
|
ELME
1391
Elme Communities
ELME
$1.51B
| $15K | ﹤0.01% |
577
+363
| +170% | +$9.44K |
|
1392
Gold Resource Corp
GORO
$133M
| $15K | ﹤0.01% |
4,994
-3,983
| -44% | -$12K |
|
1393
NetSol Technologies
NTWK
$55.2M
| $15K | ﹤0.01% |
+2,780
| New | +$15K |
|
1394
Primoris Services
PRIM
$6.59B
| $15K | ﹤0.01% |
806
+506
| +169% | +$9.42K |
|
1395
Transact Technologies
TACT
$45.9M
| $15K | ﹤0.01% |
1,289
+693
| +116% | +$8.06K |
|
1396
Vuzix
VUZI
$172M
| $15K | ﹤0.01% |
+6,747
| New | +$15K |
|
1397
ProShares Ultra FTSE China 50 of PROSHARES TRUST
XPP
$20.1M
| $15K | ﹤0.01% |
+281
| New | +$15K |
|
|
VOXX
1398
DELISTED
VOXX International Corporation Class A
VOXX
| $15K | ﹤0.01% |
3,323
+1,814
| +120% | +$8.19K |
|
|
CPE
1399
DELISTED
Callon Petroleum Company
CPE
| $15K | ﹤0.01% |
+365
| New | +$15K |
|
|
SPPI
1400
DELISTED
Spectrum Pharmaceuticals Inc
SPPI
| $15K | ﹤0.01% |
1,834
-11,712
| -86% | -$95.8K |
|