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 | |
|---|---|---|---|---|---|---|
1401
Verisk Analytics
VRSK
$26.4B
| $157K | 0.01% |
1,935
+1,088
| +128% | +$89.3K |
|
|
RVNC
1402
DELISTED
Revance Therapeutics, Inc.
RVNC
| $157K | 0.01% |
+7,551
| New | +$155K |
|
|
ACIA
1403
CALL
DELISTED
Acacia Communications Inc
ACIA
| $157K | 0.01% |
651
+479
| +278% | +$27.8K |
|
|
TERP
1404
PUT
DELISTED
TerraForm Power, Inc
TERP
| $157K | 0.01% |
781
+64
| +9% | +$772 |
|
1405
Coherus Oncology
CHRS
$217M
| $156K | 0.01% |
+7,417
| New | +$182K |
|
1406
CALL
Chevron
CVX
$388B
| $156K | 0.01% |
1,323
-653
| -33% | -$73.2K |
|
1407
CALL
Emerson Electric
EMR
$82.9B
| $156K | 0.01% |
707
-499
| -41% | -$29.8K |
|
1408
Gyre Therapeutics
GYRE
$662M
| $156K | 0.01% |
+2,216
| New | +$129K |
|
1409
PUT
Radware
RDWR
$1.24B
| $156K | 0.01% |
1,075
-54
| -5% | -$830 |
|
1410
PUT
Aurinia Pharmaceuticals
AUPH
$1.97B
| $155K | 0.01% |
903
+844
| +1,431% | +$3.9K |
|
1411
Realty Income
O
$61.2B
| $155K | 0.01% |
2,690
-279
| -9% | -$16.2K |
|
|
GOOS
1412
Canada Goose Holdings
GOOS
$868M
| $154K | 0.01% |
+9,710
| New | +$158K |
|
|
HES
1413
CALL
DELISTED
Hess
HES
| $154K | 0.01% |
2,103
+859
| +69% | +$45.5K |
|
1414
CALL
Teladoc Health
TDOC
$1.58B
| $154K | 0.01% |
385
+356
| +1,228% | +$7.41K |
|
1415
Unisys
UIS
$227M
| $154K | 0.01% |
11,111
-27,210
| -71% | -$377K |
|
1416
Canadian Natural Resources
CNQ
$96.9B
| $153K | 0.01% |
9,536
-13,604
| -59% | -$206K |
|
1417
EQT Corp
EQT
$33.2B
| $153K | 0.01% |
4,605
-22,461
| -83% | -$750K |
|
1418
Spectrum Brands
SPB
$2.04B
| $153K | 0.01% |
+1,105
| New | +$147K |
|
|
CMCM
1419
Cheetah Mobile
CMCM
$88.8M
| $152K | 0.01% |
+2,832
| New | +$147K |
|
1420
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
$351M
| $152K | 0.01% |
118
-431
| -79% | -$729K |
|
1421
PUT
Valero Energy
VLO
$89.8B
| $152K | 0.01% |
820
-494
| -38% | -$33.1K |
|
1422
CALL
Globant
GLOB
$1.35B
| $151K | 0.01% |
456
+336
| +280% | +$11.7K |
|
|
S
1423
DELISTED
Sprint Corporation
S
| $151K | 0.01% |
17,453
-59,936
| -77% | -$524K |
|
|
SFS
1424
DELISTED
Smart & Final Stores, Inc.
SFS
| $151K | 0.01% |
12,516
-7,585
| -38% | -$104K |
|
|
NXTM
1425
DELISTED
NxStage Medical Inc.
NXTM
| $151K | 0.01% |
+5,630
| New | +$156K |
|
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.