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 | |
|---|---|---|---|---|---|---|
676
Henry Schein
HSIC
$9.59B
| $384K | 0.02% |
6,464
+3,906
| +153% | +$236K |
|
677
CALL
Philip Morris
PM
$301B
| $384K | 0.02% |
2,211
+400
| +22% | +$37.1K |
|
678
Emcor
EME
$34.2B
| $382K | 0.02% |
5,411
-7,792
| -59% | -$511K |
|
679
CALL
CVS Health
CVS
$136B
| $378K | 0.02% |
3,331
+699
| +27% | +$56.6K |
|
680
PUT
Perrigo
PRGO
$1.41B
| $378K | 0.02% |
273
-78
| -22% | -$6.77K |
|
681
CALL
Starbucks
SBUX
$117B
| $378K | 0.02% |
2,412
+825
| +52% | +$45.7K |
|
|
PF
682
DELISTED
Pinnacle Foods, Inc.
PF
| $378K | 0.02% |
+7,080
| New | +$359K |
|
683
Golar LNG
GLNG
$5.1B
| $377K | 0.02% |
16,439
+9,612
| +141% | +$224K |
|
|
AET
684
CALL
DELISTED
Aetna Inc
AET
| $377K | 0.02% |
1,072
+284
| +36% | +$34K |
|
|
CRC
685
DELISTED
California Resources Corporation
CRC
| $377K | 0.02% |
+20,487
| New | +$300K |
|
686
CALL
Seagate
STX
$211B
| $376K | 0.02% |
1,650
-531
| -24% | -$19.8K |
|
687
CALL
Kroger
KR
$33.9B
| $375K | 0.02% |
1,717
+843
| +96% | +$27.5K |
|
688
CALL
lululemon athletica
LULU
$12.6B
| $375K | 0.02% |
1,268
+767
| +153% | +$45.7K |
|
689
NCR Voyix
VYX
$1.04B
| $375K | 0.02% |
+15,086
| New | +$339K |
|
690
CALL
National Beverage
FIZZ
$2.89B
| $374K | 0.02% |
1,292
+872
| +208% | +$21.4K |
|
691
CALL
Eli Lilly
LLY
$1.04T
| $374K | 0.02% |
2,334
-422
| -15% | -$31.4K |
|
692
Aon
AON
$75.2B
| $371K | 0.02% |
3,331
-6,751
| -67% | -$752K |
|
|
BZUN
693
Baozun
BZUN
$141M
| $371K | 0.02% |
30,740
+18,122
| +144% | +$261K |
|
694
PUT
American Express
AXP
$234B
| $370K | 0.02% |
2,697
+1,262
| +88% | +$87.4K |
|
695
CALL
GE Aerospace
GE
$362B
| $370K | 0.02% |
838
-343
| -29% | -$49.8K |
|
696
CALL
Ionis Pharmaceuticals
IONS
$9B
| $370K | 0.02% |
640
+237
| +59% | +$9.38K |
|
697
CALL
Valero Energy
VLO
$94.2B
| $370K | 0.02% |
918
-510
| -36% | -$31.4K |
|
698
CALL
International Paper
IP
$20.2B
| $369K | 0.02% |
1,046
-130
| -11% | -$6.01K |
|
|
LGF.A
699
DELISTED
Lions Gate Entertainment Corp. Class A Voting Shares
LGF.A
| $369K | 0.02% |
+13,733
| New | +$372K |
|
700
ProShares Ultra Gold
UGL
$650M
| $368K | 0.02% |
44,372
+34,448
| +347% | +$323K |
|
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.