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 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$49.8M |
| 2 |
Apple
AAPL
|
+$24.5M |
| 3 |
Citigroup
C
|
+$23.5M |
| 4 |
Amazon
AMZN
|
+$22.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$18.5M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
LNKD
LinkedIn Corporation
LNKD
|
+$17.4M |
| 2 |
Wells Fargo
WFC
|
+$13.5M |
| 3 |
MDVN
MEDIVATION, INC.
MDVN
|
+$8.62M |
| 4 |
Goldman Sachs
GS
|
+$8.5M |
| 5 |
iShares iBoxx $ High Yield Corporate Bond ETF
HYG
|
+$8.15M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 8.76% |
| 2 | Technology | 7.19% |
| 3 | Healthcare | 6.91% |
| 4 | Consumer Discretionary | 6.53% |
| 5 | Financials | 5.37% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
OAK
1426
PUT
DELISTED
OAKTREE CAPITAL GROUP, LLC
OAK
| $115K | 0.01% |
238
-29
| -11% | -$1.16K |
|
1427
Acadia Healthcare
ACHC
$3.17B
| $114K | 0.01% |
3,446
-4,245
| -55% | -$165K |
|
1428
CALL
J.M. Smucker
SJM
$12.6B
| $114K | 0.01% |
148
+41
| +38% | +$5.31K |
|
1429
PUT
S&P Global
SPGI
$126B
| $114K | 0.01% |
157
+86
| +121% | +$10.3K |
|
1430
PUT
VeriSign
VRSN
$25.5B
| $114K | 0.01% |
203
-21
| -9% | -$1.66K |
|
|
AVP
1431
DELISTED
Avon Products, Inc.
AVP
| $114K | 0.01% |
+22,737
| New | +$132K |
|
|
SHLD
1432
CALL
DELISTED
Sears Holding Corporation
SHLD
| $114K | 0.01% |
1,205
-132
| -10% | -$1.51K |
|
1433
CALL
Ameriprise Financial
AMP
$46.8B
| $113K | 0.01% |
176
+109
| +163% | +$11.5K |
|
1434
CALL
Cboe Global Markets
CBOE
$29.8B
| $113K | 0.01% |
270
+68
| +34% | +$4.68K |
|
1435
CALL
Harley-Davidson
HOG
$2.68B
| $113K | 0.01% |
693
+131
| +23% | +$7.47K |
|
1436
CALL
Incyte
INCY
$23.5B
| $113K | 0.01% |
231
+51
| +28% | +$4.98K |
|
1437
PUT
PayPal
PYPL
$49.5B
| $113K | 0.01% |
1,601
+344
| +27% | +$13.8K |
|
1438
PUT
Ultragenyx Pharmaceutical
RARE
$2.65B
| $113K | 0.01% |
280
+275
| +5,500% | +$19.5K |
|
|
BUFF
1439
CALL
DELISTED
Blue Buffalo Pet Products, Inc
BUFF
| $113K | 0.01% |
480
+349
| +266% | +$8.45K |
|
|
ALR
1440
PUT
DELISTED
Alere Inc
ALR
| $113K | 0.01% |
1,119
+971
| +656% | +$39.3K |
|
1441
PUT
Hain Celestial
HAIN
$47.8M
| $112K | 0.01% |
1,067
+619
| +138% | +$23.2K |
|
1442
Sinclair Inc
SBGI
$974M
| $112K | 0.01% |
3,369
+2,725
| +423% | +$81.2K |
|
1443
ProShares UltraShort Russell2000
TWM
$43.2M
| $112K | 0.01% |
238
+225
| +1,731% | +$122K |
|
1444
Vuzix
VUZI
$190M
| $112K | 0.01% |
16,474
-3,455
| -17% | -$25.7K |
|
|
AY
1445
DELISTED
Atlantica Sustainable Infrastructure plc Ordinary Shares
AY
| $112K | 0.01% |
5,822
+5,484
| +1,622% | +$100K |
|
|
WAGE
1446
DELISTED
WageWorks, Inc.
WAGE
| $112K | 0.01% |
+1,547
| New | +$104K |
|
|
COL
1447
PUT
DELISTED
Rockwell Collins
COL
| $112K | 0.01% |
645
+638
| +9,114% | +$56.2K |
|
1448
CALL
Adobe
ADBE
$89.5B
| $111K | 0.01% |
735
-467
| -39% | -$49.4K |
|
1449
Fortuna Silver Mines
FSM
$2.59B
| $111K | 0.01% |
+19,689
| New | +$124K |
|
1450
PUT
PTC Therapeutics
PTCT
$6.37B
| $111K | 0.01% |
378
-23
| -6% | -$241 |
|
Similar funds
Simplex Trading's Q4 2016 Portfolio in Review
As of Q4 2016, Simplex Trading held 7,301 positions worth $1.67B, up 13% from $1.48B the previous quarter. Its ten largest holdings account for 20% of the portfolio.
Simplex Trading deployed $181M of net new capital in Q4 2016, opening 1,543 new positions and adding to 2,137 existing holdings. Its largest new stake was State Street SPDR S&P 500 ETF Trust: 227,870 shares worth $50.9M.
By sector, the portfolio is most concentrated in Communication Services at 8.8% of assets, up from 8.4% a quarter earlier, followed by Technology and Healthcare.
On the sell side, the largest reduction was Goldman Sachs, an estimated $8.5M trimmed.
- Simplex Trading's largest Q4 2016 buy was State Street SPDR S&P 500 ETF Trust: 227,870 shares worth $50.9M.
- Simplex Trading added most to Apple in Q4 2016, an estimated $24.5M increase.
- Simplex Trading's biggest Q4 2016 reduction was Goldman Sachs, cutting an estimated $8.5M.
- Simplex Trading fully exited LinkedIn Corporation in Q4 2016, selling an estimated $17.4M.
- Simplex Trading's ten largest holdings make up 20% of its $1.67B portfolio in Q4 2016.
- Simplex Trading opened 1,543 new positions and closed 1,480 in Q4 2016.
- Simplex Trading's portfolio value rose 13% quarter-over-quarter to $1.67B.
Based on Simplex Trading's 13F filing for Q4 2016, filed 11 Jan 2017.