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 |
iShares Russell 2000 ETF
IWM
|
+$27.5M |
| 2 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$16.3M |
| 3 |
Walt Disney
DIS
|
+$13.9M |
| 4 |
iShares MSCI Emerging Markets ETF
EEM
|
+$10.4M |
| 5 |
Gilead Sciences
GILD
|
+$10.4M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
+$95.3M |
| 2 |
Apple
AAPL
|
+$21.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$20M |
| 4 |
IBM
IBM
|
+$13.4M |
| 5 |
Baidu
BIDU
|
+$12.1M |
Sector Composition
| 1 | Healthcare | 13.63% |
| 2 | Communication Services | 9.81% |
| 3 | Consumer Discretionary | 9.7% |
| 4 | Technology | 9.67% |
| 5 | Financials | 9.48% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
526
Unisys
UIS
$276M
| $167K | 0.01% |
14,064
+12,678
| +915% | +$151K |
|
527
Vanguard Total World Stock ETF
VT
$52.3B
| $167K | 0.01% |
3,022
-989
| -25% | -$54.7K |
|
528
Alerian MLP ETF
AMLP
$10.5B
| $165K | 0.01% |
2,653
+2,536
| +2,168% | +$158K |
|
|
RENT
529
DELISTED
RENTRAK CORP
RENT
| $165K | 0.01% |
+3,068
| New | +$165K |
|
|
BEE
530
DELISTED
STRATEGIC HOTELS & RESORTS, INC
BEE
| $165K | 0.01% |
11,987
+9,603
| +403% | +$132K |
|
531
Oneok
OKE
$46.2B
| $164K | 0.01% |
5,121
-1,217
| -19% | -$39K |
|
532
United Natural Foods
UNFI
$1.72B
| $164K | 0.01% |
3,396
+3,094
| +1,025% | +$149K |
|
533
Dentsply Sirona
XRAY
$2.73B
| $164K | 0.01% |
3,258
+2,121
| +187% | +$107K |
|
|
YOKU
534
DELISTED
YOUKU TUDOU INC.(CAYMAN ISLS)
YOKU
| $164K | 0.01% |
9,337
-23,250
| -71% | -$408K |
|
535
EQT Corp
EQT
$31.9B
| $162K | 0.01% |
+4,620
| New | +$162K |
|
536
Vicor
VICR
$2.25B
| $161K | 0.01% |
+15,800
| New | +$161K |
|
537
ProShares VIX Mid-Term Futures ETF
VIXM
$41.2M
| $161K | 0.01% |
2,551
+127
| +5% | +$8.02K |
|
538
Deluxe
DLX
$858M
| $160K | 0.01% |
2,877
+2,517
| +699% | +$140K |
|
539
American Financial Group
AFG
$11.4B
| $159K | 0.01% |
+2,318
| New | +$159K |
|
|
ABMD
540
DELISTED
Abiomed Inc
ABMD
| $159K | 0.01% |
+1,718
| New | +$159K |
|
541
Aflac
AFL
$57.3B
| $158K | 0.01% |
5,454
-3,398
| -38% | -$98.4K |
|
|
S
542
DELISTED
Sprint Corporation
S
| $158K | 0.01% |
41,298
+36,460
| +754% | +$139K |
|
|
CEMP
543
DELISTED
Cempra, Inc.
CEMP
| $158K | 0.01% |
5,688
-20,585
| -78% | -$572K |
|
|
MTSC
544
DELISTED
MTS Systems Corp
MTSC
| $158K | 0.01% |
2,644
+2,381
| +905% | +$142K |
|
545
BHP
BHP
$135B
| $156K | 0.01% |
5,550
-4,716
| -46% | -$133K |
|
546
Public Service Enterprise Group
PEG
$40.8B
| $156K | 0.01% |
3,707
+3,177
| +599% | +$134K |
|
547
Wabtec
WAB
$32.4B
| $156K | 0.01% |
+1,783
| New | +$156K |
|
548
iShares MSCI Germany ETF
EWG
$2.38B
| $155K | 0.01% |
6,290
+3,048
| +94% | +$75.1K |
|
549
Protolabs
PRLB
$1.17B
| $155K | 0.01% |
2,314
-3,559
| -61% | -$238K |
|
550
Qorvo
QRVO
$8.26B
| $155K | 0.01% |
+3,444
| New | +$155K |
|