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
| Rank | Stock | Value |
|---|---|---|
| 1 |
Goldman Sachs
GS
|
+$40.4M |
| 2 |
NVIDIA
NVDA
|
+$23.1M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.5M |
| 4 |
Wells Fargo
WFC
|
+$20.8M |
| 5 |
Micron Technology
MU
|
+$20M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Citigroup
C
|
+$21.4M |
| 2 |
Apple
AAPL
|
+$15.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$14.4M |
| 4 |
Eli Lilly
LLY
|
+$10.5M |
| 5 |
iShares Biotechnology ETF
IBB
|
+$8.06M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 9.73% |
| 2 | Communication Services | 9.25% |
| 3 | Consumer Discretionary | 8.76% |
| 4 | Healthcare | 8.53% |
| 5 | Financials | 7.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1501
Direxion Daily S&P Oil & Gas Exp. & Prod. Bear 2X ETF
DRIP
$103M
| $134K | 0.01% |
20
-4
| -17% | -$25.5K |
|
1502
Movado Group
MOV
$812M
| $134K | 0.01% |
5,371
+3,638
| +210% | +$92.2K |
|
|
PPL
1503
CALL
PPL Corp
PPL
$27.3B
| $134K | 0.01% |
1,214
-251
| -17% | -$8.98K |
|
1504
LendingTree
TREE
$544M
| $134K | 0.01% |
+1,076
| New | +$123K |
|
|
TAST
1505
DELISTED
Carrols Restaurant Group, Inc.
TAST
| $134K | 0.01% |
9,493
+6,557
| +223% | +$97.9K |
|
|
RPXC
1506
DELISTED
RPX Corporation
RPXC
| $134K | 0.01% |
11,214
+8,647
| +337% | +$98.1K |
|
|
DISH
1507
PUT
DELISTED
DISH Network Corp.
DISH
| $134K | 0.01% |
722
-64
| -8% | -$3.96K |
|
|
OSIR
1508
DELISTED
Osiris Therapeutics, Inc. Common Stock
OSIR
| $134K | 0.01% |
+27,970
| New | +$152K |
|
1509
Compass Minerals
CMP
$1.24B
| $133K | 0.01% |
1,964
+1,415
| +258% | +$108K |
|
1510
Enovis
ENOV
$1.56B
| $133K | 0.01% |
+1,983
| New | +$132K |
|
1511
PUT
Coca-Cola
KO
$354B
| $133K | 0.01% |
1,492
+166
| +13% | +$6.92K |
|
1512
OneMain Financial
OMF
$6.9B
| $133K | 0.01% |
5,379
+4,606
| +596% | +$116K |
|
1513
PUT
Abercrombie & Fitch
ANF
$4.17B
| $132K | 0.01% |
1,831
+1,161
| +173% | +$13.8K |
|
1514
Flowserve
FLS
$9.25B
| $132K | 0.01% |
+2,742
| New | +$133K |
|
1515
Repligen
RGEN
$7.44B
| $132K | 0.01% |
+3,777
| New | +$120K |
|
1516
PUT
LPL Financial
LPLA
$26.3B
| $131K | 0.01% |
313
+119
| +61% | +$4.68K |
|
1517
Direxion Daily S&P 500 Bear 3x ETF
SPXS
$332M
| $131K | 0.01% |
+29
| New | +$139K |
|
1518
USA Compression Partners
USAC
$3.82B
| $131K | 0.01% |
7,792
-4,111
| -35% | -$73.3K |
|
1519
WEC Energy
WEC
$37.7B
| $131K | 0.01% |
2,161
+1,282
| +146% | +$75.6K |
|
|
STOR
1520
DELISTED
STORE Capital Corporation
STOR
| $131K | 0.01% |
5,512
+5,368
| +3,728% | +$130K |
|
|
CERN
1521
CALL
DELISTED
Cerner Corp
CERN
| $131K | 0.01% |
462
+396
| +600% | +$21.4K |
|
|
WFM
1522
CALL
DELISTED
Whole Foods Market Inc
WFM
| $131K | 0.01% |
1,456
-2,846
| -66% | -$85.7K |
|
|
QIWI
1523
DELISTED
QIWI PLC
QIWI
| $131K | 0.01% |
7,680
+3,575
| +87% | +$51.7K |
|
1524
PUT
Gyre Therapeutics
GYRE
$662M
| $130K | 0.01% |
+50
| New | +$2.92K |
|
|
NVMI
1525
Nova
NVMI
$13.9B
| $130K | 0.01% |
7,033
+5,151
| +274% | +$82.3K |
|
Similar funds
Simplex Trading's Q1 2017 Portfolio in Review
As of Q1 2017, Simplex Trading held 7,485 positions worth $2.31B, up 38% from $1.67B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading deployed $551M of net new capital in Q1 2017, opening 1,662 new positions and adding to 2,374 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
By sector, the portfolio is most concentrated in Technology at 9.7% of assets, up from 7.2% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was Citigroup, an estimated $21.4M trimmed.
- Simplex Trading's largest Q1 2017 buy was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
- Simplex Trading added most to Goldman Sachs in Q1 2017, an estimated $40.4M increase.
- Simplex Trading's biggest Q1 2017 reduction was Citigroup, cutting an estimated $21.4M.
- Simplex Trading fully exited Invesco QQQ Trust in Q1 2017, selling an estimated $14.4M.
- Simplex Trading's ten largest holdings make up 18% of its $2.31B portfolio in Q1 2017.
- Simplex Trading opened 1,662 new positions and closed 1,369 in Q1 2017.
- Simplex Trading's portfolio value rose 38% quarter-over-quarter to $2.31B.
Based on Simplex Trading's 13F filing for Q1 2017, filed 21 Apr 2017.