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 | |
|---|---|---|---|---|---|---|
1576
PUT
Ciena
CIEN
$55.3B
| $95K | 0.01% |
421
+282
| +203% | +$6.16K |
|
1577
Snap-on
SNA
$20.9B
| $95K | 0.01% |
+560
| New | +$91.1K |
|
1578
PUT
Xerox
XRX
$337M
| $95K | 0.01% |
120
-2
| -2% | -$50 |
|
|
GAP
1579
CALL
The Gap Inc
GAP
$6.84B
| $95K | 0.01% |
842
-73
| -8% | -$1.88K |
|
1580
PUT
Cummins
CMI
$91.7B
| $94K | 0.01% |
552
+211
| +62% | +$28.2K |
|
1581
CALL
Cemex
CX
$17.4B
| $94K | 0.01% |
2,057
-209
| -9% | -$1.66K |
|
1582
Manulife Financial
MFC
$72.6B
| $94K | 0.01% |
+5,302
| New | +$86.4K |
|
|
SOHU
1583
Sohu.com
SOHU
$336M
| $94K | 0.01% |
2,792
-19,725
| -88% | -$737K |
|
|
VRNT
1584
DELISTED
Verint Systems
VRNT
| $94K | 0.01% |
+5,237
| New | +$97.4K |
|
1585
PUT
Weibo
WB
$1.9B
| $94K | 0.01% |
151
-793
| -84% | -$37.8K |
|
1586
PUT
Weyerhaeuser
WY
$17.3B
| $94K | 0.01% |
941
+784
| +499% | +$24.2K |
|
1587
PUT
Credit Acceptance
CACC
$6B
| $93K | 0.01% |
148
+59
| +66% | +$11.4K |
|
1588
PUT
Domino's
DPZ
$11B
| $93K | 0.01% |
417
+207
| +99% | +$33.6K |
|
1589
PUT
ICICI Bank
IBN
$106B
| $93K | 0.01% |
1,101
-326
| -23% | -$2.32K |
|
1590
Direxion Daily Semiconductor Bear 3X ETF
SOXS
$1.74B
| – | – |
0
| – | – |
|
|
CCEC
1591
Capital Clean Energy Carriers
CCEC
$1.4B
| $93K | 0.01% |
4,183
+3,812
| +1,027% | +$81.9K |
|
|
TIF
1592
PUT
DELISTED
Tiffany & Co.
TIF
| $93K | 0.01% |
677
+215
| +47% | +$16.6K |
|
|
FRED
1593
CALL
DELISTED
Fred's Inc
FRED
| $93K | 0.01% |
+267
| New | +$2.89K |
|
|
EMES
1594
DELISTED
Emerge Energy Services LP
EMES
| $93K | 0.01% |
7,592
-10,828
| -59% | -$133K |
|
|
AET
1595
PUT
DELISTED
Aetna Inc
AET
| $93K | 0.01% |
1,943
+1,028
| +112% | +$123K |
|
|
TERP
1596
CALL
DELISTED
TerraForm Power, Inc
TERP
| $93K | 0.01% |
517
-169
| -25% | -$2.2K |
|
1597
CALL
BorgWarner
BWA
$13.2B
| $92K | 0.01% |
292
+91
| +45% | +$2.94K |
|
1598
PUT
DuPont de Nemours
DD
$18.6B
| $92K | 0.01% |
647
+51
| +9% | +$7.1K |
|
1599
PUT
Estee Lauder
EL
$29B
| $92K | 0.01% |
373
+5
| +1% | +$406 |
|
1600
PUT
Energy Transfer Partners
ET
$70.1B
| $92K | 0.01% |
1,880
-391
| -17% | -$6.52K |
|
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.