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 | |
|---|---|---|---|---|---|---|
|
KEM
1076
DELISTED
KEMET Corporation
KEM
| $194K | 0.01% |
29,300
+28,799
| +5,748% | +$138K |
|
1077
PUT
Charter Communications
CHTR
$15.6B
| $193K | 0.01% |
455
-22
| -5% | -$5.92K |
|
1078
PUT
Pan American Silver
PAAS
$18.6B
| $193K | 0.01% |
795
-572
| -42% | -$9.22K |
|
1079
PUT
Seagate
STX
$207B
| $193K | 0.01% |
1,501
-465
| -24% | -$17.4K |
|
1080
Incyte
INCY
$23.3B
| $192K | 0.01% |
1,916
-19,974
| -91% | -$1.95M |
|
1081
PUT
McDonald's
MCD
$187B
| $192K | 0.01% |
2,602
-1,360
| -34% | -$159K |
|
1082
PUT
American International
AIG
$41.4B
| $191K | 0.01% |
3,247
+1,963
| +153% | +$123K |
|
1083
Ares Capital
ARCC
$13.4B
| $191K | 0.01% |
+11,616
| New | +$183K |
|
1084
iShares MSCI Spain ETF
EWP
$1.96B
| $190K | 0.01% |
7,203
-2,532
| -26% | -$66.8K |
|
1085
CALL
McKesson
MCK
$96.5B
| $190K | 0.01% |
718
+228
| +47% | +$33.5K |
|
1086
PUT
Invesco CurrencyShares Japanese Yen Trust
FXY
$423M
| $189K | 0.01% |
778
+512
| +192% | +$45.3K |
|
1087
PUT
Jazz Pharmaceuticals
JAZZ
$16B
| $189K | 0.01% |
88
+17
| +24% | +$1.89K |
|
|
KNDI
1088
PUT
Kandi Technologies Group
KNDI
$65.9M
| $189K | 0.01% |
323
+8
| +3% | +$40 |
|
1089
CALL
National Healthcare
NHC
$3.46B
| $189K | 0.01% |
+270
| New | +$18.7K |
|
1090
PUT
Novartis
NVS
$297B
| $189K | 0.01% |
70
-109
| -61% | -$7.07K |
|
1091
PUT
Sibanye-Stillwater
SBSW
$5.97B
| $189K | 0.01% |
460
+448
| +3,733% | +$4.08K |
|
|
WBA
1092
CALL
DELISTED
Walgreens Boots Alliance
WBA
| $189K | 0.01% |
820
-217
| -21% | -$17.9K |
|
1093
CALL
Vulcan Materials
VMC
$35.7B
| $188K | 0.01% |
212
-150
| -41% | -$18.1K |
|
1094
World Kinect Corp
WKC
$1.86B
| $188K | 0.01% |
4,114
+3,158
| +330% | +$141K |
|
1095
CALL
Diamondback Energy
FANG
$57.8B
| $187K | 0.01% |
219
+76
| +53% | +$7.59K |
|
|
K
1096
CALL
DELISTED
Kellanova
K
| $187K | 0.01% |
581
-82
| -12% | -$5.7K |
|
1097
Keysight
KEYS
$55.6B
| $187K | 0.01% |
5,125
+4,323
| +539% | +$149K |
|
1098
CALL
Accenture
ACN
$84.9B
| $186K | 0.01% |
717
+135
| +23% | +$16K |
|
1099
Box
BOX
$3.92B
| $186K | 0.01% |
13,470
+2,381
| +21% | +$35.2K |
|
1100
CALL
Textron
TXT
$16.2B
| $185K | 0.01% |
339
+103
| +44% | +$4.49K |
|
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.